39997000057 has 4 divisors (see below), whose sum is σ = 45710857216. Its totient is φ = 34283142900.

The previous prime is 39997000051. The next prime is 39997000097. The reversal of 39997000057 is 75000079993.

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 39997000057 - 2³ = 39997000049 is a prime.

It is the 199993-rd Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39997000051) by changing a digit.

It is a nontrivial repunit in base 199992.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2856928569 + ... + 2856928582.

It is an arithmetic number, because the mean of its divisors is an integer number (11427714304).

Almost surely, 2^39997000057 is an apocalyptic number.

It is an amenable number.

39997000057 is a deficient number, since it is larger than the sum of its proper divisors (5713857159).

39997000057 is an equidigital number, since it uses as much as digits as its factorization.

39997000057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5713857158.

The product of its (nonzero) digits is 535815, while the sum is 49.

The spelling of 39997000057 in words is "thirty-nine billion, nine hundred ninety-seven million, fifty-seven", and thus it is an aban number.