57039949 has 4 divisors (see below), whose sum is σ = 57149536. Its totient is φ = 56930364.

The previous prime is 57039943. The next prime is 57039959. The reversal of 57039949 is 94993075.

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 57039949 - 2⁷ = 57039821 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57039899 and 57039908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57039943) 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, 54009 + ... + 55054.

It is an arithmetic number, because the mean of its divisors is an integer number (14287384).

Almost surely, 2^57039949 is an apocalyptic number.

It is an amenable number.

57039949 is a deficient number, since it is larger than the sum of its proper divisors (109587).

57039949 is a wasteful number, since it uses less digits than its factorization.

57039949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109586.

The product of its (nonzero) digits is 306180, while the sum is 46.

The square root of 57039949 is about 7552.4796590259. The cubic root of 57039949 is about 384.9400007698.

The spelling of 57039949 in words is "fifty-seven million, thirty-nine thousand, nine hundred forty-nine".