57394939 has 4 divisors (see below), whose sum is σ = 65594224. Its totient is φ = 49195656.

The previous prime is 57394933. The next prime is 57394969. The reversal of 57394939 is 93949375.

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

It is a cyclic number.

It is not a de Polignac number, because 57394939 - 2⁹ = 57394427 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57394892 and 57394901.

It is not an unprimeable number, because it can be changed into a prime (57394933) 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, 4099632 + ... + 4099645.

It is an arithmetic number, because the mean of its divisors is an integer number (16398556).

Almost surely, 2^57394939 is an apocalyptic number.

57394939 is a deficient number, since it is larger than the sum of its proper divisors (8199285).

57394939 is an equidigital number, since it uses as much as digits as its factorization.

57394939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8199284.

The product of its digits is 918540, while the sum is 49.

The square root of 57394939 is about 7575.9447595663. The cubic root of 57394939 is about 385.7369121027.

The spelling of 57394939 in words is "fifty-seven million, three hundred ninety-four thousand, nine hundred thirty-nine".