239955009 has 48 divisors (see below), whose sum is σ = 399401280. Its totient is φ = 127370880.

The previous prime is 239954999. The next prime is 239955031. The reversal of 239955009 is 900559932.

It is not a de Polignac number, because 239955009 - 2⁴ = 239954993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (239955059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 147219 + ... + 148839.

It is an arithmetic number, because the mean of its divisors is an integer number (8320860).

Almost surely, 2^239955009 is an apocalyptic number.

It is an amenable number.

239955009 is a deficient number, since it is larger than the sum of its proper divisors (159446271).

239955009 is a wasteful number, since it uses less digits than its factorization.

239955009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1710 (or 1703 counting only the distinct ones).

The product of its (nonzero) digits is 109350, while the sum is 42.

The square root of 239955009 is about 15490.4812384897. The cubic root of 239955009 is about 621.4076661257.

The spelling of 239955009 in words is "two hundred thirty-nine million, nine hundred fifty-five thousand, nine".