157399699 has 4 divisors (see below), whose sum is σ = 157431600. Its totient is φ = 157367800.

The previous prime is 157399637. The next prime is 157399709. The reversal of 157399699 is 996993751.

157399699 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 157399699 - 2²⁷ = 23181971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157399999) 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, 6799 + ... + 19000.

It is an arithmetic number, because the mean of its divisors is an integer number (39357900).

Almost surely, 2^157399699 is an apocalyptic number.

157399699 is a deficient number, since it is larger than the sum of its proper divisors (31901).

157399699 is an equidigital number, since it uses as much as digits as its factorization.

157399699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31900.

The product of its digits is 4133430, while the sum is 58.

The square root of 157399699 is about 12545.9036741081. The cubic root of 157399699 is about 539.9264863346.

The spelling of 157399699 in words is "one hundred fifty-seven million, three hundred ninety-nine thousand, six hundred ninety-nine".