239569873 has 2 divisors, whose sum is σ = 239569874. Its totient is φ = 239569872.

The previous prime is 239569861. The next prime is 239569903. The reversal of 239569873 is 378965932.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 238146624 + 1423249 = 15432^2 + 1193^2 .

It is a cyclic number.

It is not a de Polignac number, because 239569873 - 2⁹ = 239569361 is a prime.

It is a super-2 number, since 2×239569873² = 114787448098472258, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 239569873.

It is not a weakly prime, because it can be changed into another prime (239569843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119784936 + 119784937.

It is an arithmetic number, because the mean of its divisors is an integer number (119784937).

Almost surely, 2^239569873 is an apocalyptic number.

It is an amenable number.

239569873 is a deficient number, since it is larger than the sum of its proper divisors (1).

239569873 is an equidigital number, since it uses as much as digits as its factorization.

239569873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2449440, while the sum is 52.

The square root of 239569873 is about 15478.0448700732. The cubic root of 239569873 is about 621.0750279080.

The spelling of 239569873 in words is "two hundred thirty-nine million, five hundred sixty-nine thousand, eight hundred seventy-three".