152439239 has 4 divisors (see below), whose sum is σ = 159067056. Its totient is φ = 145811424.

The previous prime is 152439233. The next prime is 152439241. The reversal of 152439239 is 932934251.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 152439239 - 2²⁰ = 151390663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152439233) 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, 3313874 + ... + 3313919.

It is an arithmetic number, because the mean of its divisors is an integer number (39766764).

Almost surely, 2^152439239 is an apocalyptic number.

152439239 is a deficient number, since it is larger than the sum of its proper divisors (6627817).

152439239 is an equidigital number, since it uses as much as digits as its factorization.

152439239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6627816.

The product of its digits is 58320, while the sum is 38.

The square root of 152439239 is about 12346.6286491495. The cubic root of 152439239 is about 534.1938994355.

The spelling of 152439239 in words is "one hundred fifty-two million, four hundred thirty-nine thousand, two hundred thirty-nine".