158979967 has 2 divisors, whose sum is σ = 158979968. Its totient is φ = 158979966.

The previous prime is 158979917. The next prime is 158979983. The reversal of 158979967 is 769979851.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 158979967 - 2⁷ = 158979839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (158979917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79489983 + 79489984.

It is an arithmetic number, because the mean of its divisors is an integer number (79489984).

Almost surely, 2^158979967 is an apocalyptic number.

158979967 is a deficient number, since it is larger than the sum of its proper divisors (1).

158979967 is an equidigital number, since it uses as much as digits as its factorization.

158979967 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8573040, while the sum is 61.

The square root of 158979967 is about 12608.7258277750. The cubic root of 158979967 is about 541.7273981715.

The spelling of 158979967 in words is "one hundred fifty-eight million, nine hundred seventy-nine thousand, nine hundred sixty-seven".