239673856 has 20 divisors (see below), whose sum is σ = 478880622. Its totient is φ = 119836672.

The previous prime is 239673853. The next prime is 239673857. The reversal of 239673856 is 658376932.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 223801600 + 15872256 = 14960^2 + 3984^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (239673853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 233545 + ... + 234568.

Almost surely, 2^239673856 is an apocalyptic number.

It is an amenable number.

239673856 is a deficient number, since it is larger than the sum of its proper divisors (239206766).

239673856 is an frugal number, since it uses more digits than its factorization.

239673856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468131 (or 468115 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 49.

The square root of 239673856 is about 15481.4035539417. The cubic root of 239673856 is about 621.1648721254.

The spelling of 239673856 in words is "two hundred thirty-nine million, six hundred seventy-three thousand, eight hundred fifty-six".