57839909 has 2 divisors, whose sum is σ = 57839910. Its totient is φ = 57839908.

The previous prime is 57839897. The next prime is 57839923. The reversal of 57839909 is 90993875.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57047809 + 792100 = 7553^2 + 890^2 .

It is a cyclic number.

It is not a de Polignac number, because 57839909 - 2¹⁶ = 57774373 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57839989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28919954 + 28919955.

It is an arithmetic number, because the mean of its divisors is an integer number (28919955).

Almost surely, 2^57839909 is an apocalyptic number.

It is an amenable number.

57839909 is a deficient number, since it is larger than the sum of its proper divisors (1).

57839909 is an equidigital number, since it uses as much as digits as its factorization.

57839909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 612360, while the sum is 50.

The square root of 57839909 is about 7605.2553540299. The cubic root of 57839909 is about 386.7311907614.

The spelling of 57839909 in words is "fifty-seven million, eight hundred thirty-nine thousand, nine hundred nine".