239720885 has 16 divisors (see below), whose sum is σ = 291049200. Its totient is φ = 189534720.

The previous prime is 239720867. The next prime is 239720947. The reversal of 239720885 is 588027932.

It can be written as a sum of positive squares in 8 ways, for example, as 49308484 + 190412401 = 7022^2 + 13799^2 .

It is not a de Polignac number, because 239720885 - 2¹⁶ = 239655349 is a prime.

It is a super-2 number, since 2×239720885² = 114932205410366450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172895 + ... + 174275.

It is an arithmetic number, because the mean of its divisors is an integer number (18190575).

Almost surely, 2^239720885 is an apocalyptic number.

It is an amenable number.

239720885 is a deficient number, since it is larger than the sum of its proper divisors (51328315).

239720885 is a wasteful number, since it uses less digits than its factorization.

239720885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1768.

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 239720885 is about 15482.9223662718. The cubic root of 239720885 is about 621.2054979613.

The spelling of 239720885 in words is "two hundred thirty-nine million, seven hundred twenty thousand, eight hundred eighty-five".