57879949 has 2 divisors, whose sum is σ = 57879950. Its totient is φ = 57879948.

The previous prime is 57879931. The next prime is 57879953. The reversal of 57879949 is 94997875.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50552100 + 7327849 = 7110^2 + 2707^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57879949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 57879893 and 57879902.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57879929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28939974 + 28939975.

It is an arithmetic number, because the mean of its divisors is an integer number (28939975).

Almost surely, 2^57879949 is an apocalyptic number.

It is an amenable number.

57879949 is a deficient number, since it is larger than the sum of its proper divisors (1).

57879949 is an equidigital number, since it uses as much as digits as its factorization.

57879949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5715360, while the sum is 58.

The square root of 57879949 is about 7607.8872888602. The cubic root of 57879949 is about 386.8204091194.

The spelling of 57879949 in words is "fifty-seven million, eight hundred seventy-nine thousand, nine hundred forty-nine".