239999970 has 64 divisors (see below), whose sum is σ = 661708800. Its totient is φ = 54571968.

The previous prime is 239999957. The next prime is 239999987. The reversal of 239999970 is 79999932.

It is a self number, because there is not a number n which added to its sum of digits gives 239999970.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38919 + ... + 44661.

It is an arithmetic number, because the mean of its divisors is an integer number (10339200).

Almost surely, 2^239999970 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 239999970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (330854400).

239999970 is an abundant number, since it is smaller than the sum of its proper divisors (421708830).

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

239999970 is a wasteful number, since it uses less digits than its factorization.

239999970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5959.

The product of its (nonzero) digits is 2480058, while the sum is 57.

The square root of 239999970 is about 15491.9324165838. The cubic root of 239999970 is about 621.4464752972.

The spelling of 239999970 in words is "two hundred thirty-nine million, nine hundred ninety-nine thousand, nine hundred seventy".