239139396 has 54 divisors (see below), whose sum is σ = 638015742. Its totient is φ = 75513600.

The previous prime is 239139389. The next prime is 239139401. The reversal of 239139396 is 693931932.

It can be written as a sum of positive squares in only one way, i.e., 199826496 + 39312900 = 14136^2 + 6270^2 .

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3796 + ... + 22196.

Almost surely, 2^239139396 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 239139396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (319007871).

239139396 is an abundant number, since it is smaller than the sum of its proper divisors (398876346).

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

239139396 is a wasteful number, since it uses less digits than its factorization.

239139396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18449 (or 18425 counting only the distinct ones).

The product of its digits is 236196, while the sum is 45.

The square root of 239139396 is about 15464.1325653914. The cubic root of 239139396 is about 620.7028069103.

The spelling of 239139396 in words is "two hundred thirty-nine million, one hundred thirty-nine thousand, three hundred ninety-six".