239152009 has 4 divisors (see below), whose sum is σ = 247398660. Its totient is φ = 230905360.

The previous prime is 239151973. The next prime is 239152013. The reversal of 239152009 is 900251932.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 38787984 + 200364025 = 6228^2 + 14155^2 .

It is a cyclic number.

It is not a de Polignac number, because 239152009 - 2¹⁵ = 239119241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (239152019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4123282 + ... + 4123339.

It is an arithmetic number, because the mean of its divisors is an integer number (61849665).

Almost surely, 2^239152009 is an apocalyptic number.

239152009 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

239152009 is a deficient number, since it is larger than the sum of its proper divisors (8246651).

239152009 is an equidigital number, since it uses as much as digits as its factorization.

239152009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8246650.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 239152009 is about 15464.5403746765. The cubic root of 239152009 is about 620.7137193558.

The spelling of 239152009 in words is "two hundred thirty-nine million, one hundred fifty-two thousand, nine".