239149285 has 16 divisors (see below), whose sum is σ = 317074176. Its totient is φ = 172235008.

The previous prime is 239149279. The next prime is 239149297. The reversal of 239149285 is 582941932.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-239149285 is a prime.

It is a super-2 number, since 2×239149285² = 114384761032022450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59209 + ... + 63118.

It is an arithmetic number, because the mean of its divisors is an integer number (19817136).

Almost surely, 2^239149285 is an apocalyptic number.

It is an amenable number.

239149285 is a deficient number, since it is larger than the sum of its proper divisors (77924891).

239149285 is a wasteful number, since it uses less digits than its factorization.

239149285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122372.

The product of its digits is 155520, while the sum is 43.

The square root of 239149285 is about 15464.4523019731. The cubic root of 239149285 is about 620.7113626531.

The spelling of 239149285 in words is "two hundred thirty-nine million, one hundred forty-nine thousand, two hundred eighty-five".