158269939 has 2 divisors, whose sum is σ = 158269940. Its totient is φ = 158269938.

The previous prime is 158269931. The next prime is 158269957. The reversal of 158269939 is 939962851.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 158269939 - 2³ = 158269931 is a prime.

It is not a weakly prime, because it can be changed into another prime (158269931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79134969 + 79134970.

It is an arithmetic number, because the mean of its divisors is an integer number (79134970).

Almost surely, 2^158269939 is an apocalyptic number.

158269939 is a deficient number, since it is larger than the sum of its proper divisors (1).

158269939 is an equidigital number, since it uses as much as digits as its factorization.

158269939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1049760, while the sum is 52.

The square root of 158269939 is about 12580.5381045486. The cubic root of 158269939 is about 540.9197163915.

The spelling of 158269939 in words is "one hundred fifty-eight million, two hundred sixty-nine thousand, nine hundred thirty-nine".