14639857 has 2 divisors, whose sum is σ = 14639858. Its totient is φ = 14639856.

The previous prime is 14639851. The next prime is 14639881. The reversal of 14639857 is 75893641.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13256881 + 1382976 = 3641^2 + 1176^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14639857 is a prime.

It is not a weakly prime, because it can be changed into another prime (14639851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7319928 + 7319929.

It is an arithmetic number, because the mean of its divisors is an integer number (7319929).

Almost surely, 2^14639857 is an apocalyptic number.

It is an amenable number.

14639857 is a deficient number, since it is larger than the sum of its proper divisors (1).

14639857 is an equidigital number, since it uses as much as digits as its factorization.

14639857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 43.

The square root of 14639857 is about 3826.2066070718. The cubic root of 14639857 is about 244.6314436331.

The spelling of 14639857 in words is "fourteen million, six hundred thirty-nine thousand, eight hundred fifty-seven".