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99943955 = 553377147
BaseRepresentation
bin1011111010100…
…00011000010011
320222001200022222
411331100120103
5201041201310
613530051255
72322336536
oct575203023
9228050288
1099943955
1151463411
1229579b2b
1317924147
14d3b8a1d
158b93055
hex5f50613

99943955 has 8 divisors (see below), whose sum is σ = 122195952. Its totient is φ = 78446368.

The previous prime is 99943913. The next prime is 99943979. The reversal of 99943955 is 55934999.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-99943955 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a junction number, because it is equal to n+sod(n) for n = 99943897 and 99943906.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 188309 + ... + 188838.

It is an arithmetic number, because the mean of its divisors is an integer number (15274494).

Almost surely, 299943955 is an apocalyptic number.

99943955 is a deficient number, since it is larger than the sum of its proper divisors (22251997).

99943955 is a wasteful number, since it uses less digits than its factorization.

99943955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377205.

The product of its digits is 1968300, while the sum is 53.

The square root of 99943955 is about 9997.1973572597. The cubic root of 99943955 is about 464.0721545415.

The spelling of 99943955 in words is "ninety-nine million, nine hundred forty-three thousand, nine hundred fifty-five".

Divisors: 1 5 53 265 377147 1885735 19988791 99943955