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999555073 = 1190868643
BaseRepresentation
bin111011100101000…
…000000000000001
32120122211122210021
4323211000000001
54021341230243
6243103533441
733525035506
oct7345000001
92518748707
10999555073
1147324a580
1223a8ba281
1312c11280a
1496a734ad
155cb446ed
hex3b940001

999555073 has 4 divisors (see below), whose sum is σ = 1090423728. Its totient is φ = 908686420.

The previous prime is 999555043. The next prime is 999555083. The reversal of 999555073 is 370555999.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 999555073 - 213 = 999546881 is a prime.

It is a super-2 number, since 2×9995550732 = 1998220687920070658, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 999555073.

It is not an unprimeable number, because it can be changed into a prime (999555023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45434311 + ... + 45434332.

It is an arithmetic number, because the mean of its divisors is an integer number (272605932).

It is a Proth number, since it is equal to 3813 ⋅ 218 + 1 and 3813 < 218.

Almost surely, 2999555073 is an apocalyptic number.

It is an amenable number.

999555073 is a deficient number, since it is larger than the sum of its proper divisors (90868655).

999555073 is a wasteful number, since it uses less digits than its factorization.

999555073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90868654.

The product of its (nonzero) digits is 1913625, while the sum is 52.

The square root of 999555073 is about 31615.7409054414. The cubic root of 999555073 is about 999.8516689990.

The spelling of 999555073 in words is "nine hundred ninety-nine million, five hundred fifty-five thousand, seventy-three".

Divisors: 1 11 90868643 999555073