57928839 has 4 divisors (see below), whose sum is σ = 77238456. Its totient is φ = 38619224.

The previous prime is 57928817. The next prime is 57928847. The reversal of 57928839 is 93882975.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57928839 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 57928791 and 57928800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57928879) 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, 9654804 + ... + 9654809.

It is an arithmetic number, because the mean of its divisors is an integer number (19309614).

Almost surely, 2^57928839 is an apocalyptic number.

57928839 is a deficient number, since it is larger than the sum of its proper divisors (19309617).

57928839 is a wasteful number, since it uses less digits than its factorization.

57928839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19309616.

The product of its digits is 1088640, while the sum is 51.

The square root of 57928839 is about 7611.0997234302. The cubic root of 57928839 is about 386.9292915439.

The spelling of 57928839 in words is "fifty-seven million, nine hundred twenty-eight thousand, eight hundred thirty-nine".