39454307957 has 4 divisors (see below), whose sum is σ = 39567357900. Its totient is φ = 39341258016.

The previous prime is 39454307923. The next prime is 39454307987. The reversal of 39454307957 is 75970345493.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10049260516 + 29405047441 = 100246^2 + 171479^2 .

It is a cyclic number.

It is not a de Polignac number, because 39454307957 - 2²⁰ = 39453259381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39454307917) 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, 56524448 + ... + 56525145.

It is an arithmetic number, because the mean of its divisors is an integer number (9891839475).

Almost surely, 2^39454307957 is an apocalyptic number.

It is an amenable number.

39454307957 is a deficient number, since it is larger than the sum of its proper divisors (113049943).

39454307957 is a wasteful number, since it uses less digits than its factorization.

39454307957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113049942.

The product of its (nonzero) digits is 14288400, while the sum is 56.

The spelling of 39454307957 in words is "thirty-nine billion, four hundred fifty-four million, three hundred seven thousand, nine hundred fifty-seven".