239561490 has 128 divisors (see below), whose sum is σ = 693043200. Its totient is φ = 52920000.

The previous prime is 239561473. The next prime is 239561503. The reversal of 239561490 is 94165932.

239561490 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 318615 + ... + 319365.

It is an arithmetic number, because the mean of its divisors is an integer number (5414400).

Almost surely, 2^239561490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 239561490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (346521600).

239561490 is an abundant number, since it is smaller than the sum of its proper divisors (453481710).

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

239561490 is a wasteful number, since it uses less digits than its factorization.

239561490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813 (or 799 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 39.

The square root of 239561490 is about 15477.7740647678. The cubic root of 239561490 is about 621.0677836294.

The spelling of 239561490 in words is "two hundred thirty-nine million, five hundred sixty-one thousand, four hundred ninety".