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47938069 = 79606811
BaseRepresentation
bin1011011011011…
…1101000010101
310100012111200001
42312313220111
544233004234
64431251301
71121316064
oct266675025
9110174601
1047938069
1125072643
1214079b31
139c15a2a
14651c1db
15431dd14
hex2db7a15

47938069 has 4 divisors (see below), whose sum is σ = 48544960. Its totient is φ = 47331180.

The previous prime is 47938067. The next prime is 47938097. The reversal of 47938069 is 96083974.

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 47938069 - 21 = 47938067 is a prime.

It is a super-2 number, since 2×479380692 = 4596116918897522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47938063) 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, 303327 + ... + 303484.

It is an arithmetic number, because the mean of its divisors is an integer number (12136240).

Almost surely, 247938069 is an apocalyptic number.

It is an amenable number.

47938069 is a deficient number, since it is larger than the sum of its proper divisors (606891).

47938069 is an equidigital number, since it uses as much as digits as its factorization.

47938069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606890.

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 47938069 is about 6923.7323027396. The cubic root of 47938069 is about 363.2677511647.

The spelling of 47938069 in words is "forty-seven million, nine hundred thirty-eight thousand, sixty-nine".

Divisors: 1 79 606811 47938069