57949779 has 4 divisors (see below), whose sum is σ = 77266376. Its totient is φ = 38633184.

The previous prime is 57949763. The next prime is 57949781. The reversal of 57949779 is 97794975.

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

It is not a de Polignac number, because 57949779 - 2⁴ = 57949763 is a prime.

It is a super-2 number, since 2×57949779² = 6716353772297682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57949789) 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, 9658294 + ... + 9658299.

It is an arithmetic number, because the mean of its divisors is an integer number (19316594).

Almost surely, 2^57949779 is an apocalyptic number.

57949779 is a deficient number, since it is larger than the sum of its proper divisors (19316597).

57949779 is a wasteful number, since it uses less digits than its factorization.

57949779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19316596.

The product of its digits is 5000940, while the sum is 57.

The square root of 57949779 is about 7612.4752216346. The cubic root of 57949779 is about 386.9759080676.

The spelling of 57949779 in words is "fifty-seven million, nine hundred forty-nine thousand, seven hundred seventy-nine".