157992939 has 12 divisors (see below), whose sum is σ = 245766976. Its totient is φ = 97226352.

The previous prime is 157992937. The next prime is 157992949. The reversal of 157992939 is 939299751.

It is not a de Polignac number, because 157992939 - 2¹ = 157992937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (157992937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 675067 + ... + 675300.

Almost surely, 2^157992939 is an apocalyptic number.

157992939 is a deficient number, since it is larger than the sum of its proper divisors (87774037).

157992939 is a wasteful number, since it uses less digits than its factorization.

157992939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1350386 (or 1350383 counting only the distinct ones).

The product of its digits is 1377810, while the sum is 54.

The square root of 157992939 is about 12569.5242153393. The cubic root of 157992939 is about 540.6039641608.

The spelling of 157992939 in words is "one hundred fifty-seven million, nine hundred ninety-two thousand, nine hundred thirty-nine".