1397479532 has 24 divisors (see below), whose sum is σ = 2506002576. Its totient is φ = 681524928.

The previous prime is 1397479519. The next prime is 1397479537. The reversal of 1397479532 is 2359747931.

It is not an unprimeable number, because it can be changed into a prime (1397479537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124838 + ... + 135570.

It is an arithmetic number, because the mean of its divisors is an integer number (104416774).

Almost surely, 2^1397479532 is an apocalyptic number.

It is an amenable number.

1397479532 is a deficient number, since it is larger than the sum of its proper divisors (1108523044).

1397479532 is a wasteful number, since it uses less digits than its factorization.

1397479532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11537 (or 11535 counting only the distinct ones).

The product of its digits is 1428840, while the sum is 50.

The square root of 1397479532 is about 37382.8775243426. The cubic root of 1397479532 is about 1118.0172007812.

The spelling of 1397479532 in words is "one billion, three hundred ninety-seven million, four hundred seventy-nine thousand, five hundred thirty-two".