157699459 has 2 divisors, whose sum is σ = 157699460. Its totient is φ = 157699458.

The previous prime is 157699427. The next prime is 157699483. The reversal of 157699459 is 954996751.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 157699459 - 2⁵ = 157699427 is a prime.

It is not a weakly prime, because it can be changed into another prime (157699499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78849729 + 78849730.

It is an arithmetic number, because the mean of its divisors is an integer number (78849730).

Almost surely, 2^157699459 is an apocalyptic number.

157699459 is a deficient number, since it is larger than the sum of its proper divisors (1).

157699459 is an equidigital number, since it uses as much as digits as its factorization.

157699459 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3061800, while the sum is 55.

The square root of 157699459 is about 12557.8445204581. The cubic root of 157699459 is about 540.2690234742.

The spelling of 157699459 in words is "one hundred fifty-seven million, six hundred ninety-nine thousand, four hundred fifty-nine".