1239387952 has 20 divisors (see below), whose sum is σ = 2619615816. Its totient is φ = 563358080.

The previous prime is 1239387931. The next prime is 1239387953. The reversal of 1239387952 is 2597839321.

It is a junction number, because it is equal to n+sod(n) for n = 1239387896 and 1239387905.

It is not an unprimeable number, because it can be changed into a prime (1239387953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3520813 + ... + 3521164.

Almost surely, 2^1239387952 is an apocalyptic number.

It is an amenable number.

1239387952 is an abundant number, since it is smaller than the sum of its proper divisors (1380227864).

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

1239387952 is a wasteful number, since it uses less digits than its factorization.

1239387952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7041996 (or 7041990 counting only the distinct ones).

The product of its digits is 816480, while the sum is 49.

The square root of 1239387952 is about 35204.9421530557. The cubic root of 1239387952 is about 1074.1602822603.

The spelling of 1239387952 in words is "one billion, two hundred thirty-nine million, three hundred eighty-seven thousand, nine hundred fifty-two".