56947389 has 12 divisors (see below), whose sum is σ = 80138016. Its totient is φ = 35966088.

The previous prime is 56947369. The next prime is 56947391. The reversal of 56947389 is 98374965.

It is not a de Polignac number, because 56947389 - 2⁵ = 56947357 is a prime.

It is a super-2 number, since 2×56947389² = 6486010227834642, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56947339) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25209 + ... + 27374.

It is an arithmetic number, because the mean of its divisors is an integer number (6678168).

Almost surely, 2^56947389 is an apocalyptic number.

It is an amenable number.

56947389 is a deficient number, since it is larger than the sum of its proper divisors (23190627).

56947389 is a wasteful number, since it uses less digits than its factorization.

56947389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52624 (or 52605 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 51.

The square root of 56947389 is about 7546.3493823173. The cubic root of 56947389 is about 384.7316711281.

The spelling of 56947389 in words is "fifty-six million, nine hundred forty-seven thousand, three hundred eighty-nine".