239868906 has 16 divisors (see below), whose sum is σ = 481448448. Its totient is φ = 79671200.

The previous prime is 239868899. The next prime is 239868907. The reversal of 239868906 is 609868932.

It is not an unprimeable number, because it can be changed into a prime (239868907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69450 + ... + 72821.

It is an arithmetic number, because the mean of its divisors is an integer number (30090528).

Almost surely, 2^239868906 is an apocalyptic number.

239868906 is an abundant number, since it is smaller than the sum of its proper divisors (241579542).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

239868906 is a wasteful number, since it uses less digits than its factorization.

239868906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142557.

The product of its (nonzero) digits is 1119744, while the sum is 51.

The square root of 239868906 is about 15487.7017662402. The cubic root of 239868906 is about 621.3333307111. Note that the first 5 decimals are identical.

The spelling of 239868906 in words is "two hundred thirty-nine million, eight hundred sixty-eight thousand, nine hundred six".