1399031472 has 20 divisors (see below), whose sum is σ = 3614164760. Its totient is φ = 466343808.

The previous prime is 1399031453. The next prime is 1399031521. The reversal of 1399031472 is 2741309931.

It is a self number, because there is not a number n which added to its sum of digits gives 1399031472.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14573197 + ... + 14573292.

It is an arithmetic number, because the mean of its divisors is an integer number (180708238).

Almost surely, 2^1399031472 is an apocalyptic number.

1399031472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1399031472 is an abundant number, since it is smaller than the sum of its proper divisors (2215133288).

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

1399031472 is a wasteful number, since it uses less digits than its factorization.

1399031472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29146500 (or 29146494 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 1399031472 is about 37403.6291287356. The cubic root of 1399031472 is about 1118.4309107689.

The spelling of 1399031472 in words is "one billion, three hundred ninety-nine million, thirty-one thousand, four hundred seventy-two".