1239431852 has 24 divisors (see below), whose sum is σ = 2308642560. Its totient is φ = 580202240.

The previous prime is 1239431839. The next prime is 1239431873. The reversal of 1239431852 is 2581349321.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34727 + ... + 60702.

It is an arithmetic number, because the mean of its divisors is an integer number (96193440).

Almost surely, 2^1239431852 is an apocalyptic number.

It is an amenable number.

1239431852 is a deficient number, since it is larger than the sum of its proper divisors (1069210708).

1239431852 is a wasteful number, since it uses less digits than its factorization.

1239431852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95641 (or 95639 counting only the distinct ones).

The product of its digits is 51840, while the sum is 38.

The square root of 1239431852 is about 35205.5656395406. The cubic root of 1239431852 is about 1074.1729646168.

The spelling of 1239431852 in words is "one billion, two hundred thirty-nine million, four hundred thirty-one thousand, eight hundred fifty-two".