1399088944 has 20 divisors (see below), whose sum is σ = 2957165640. Its totient is φ = 635949440.

The previous prime is 1399088927. The next prime is 1399088947. The reversal of 1399088944 is 4498809931.

It is not an unprimeable number, because it can be changed into a prime (1399088947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3974509 + ... + 3974860.

It is an arithmetic number, because the mean of its divisors is an integer number (147858282).

Almost surely, 2^1399088944 is an apocalyptic number.

It is an amenable number.

1399088944 is an abundant number, since it is smaller than the sum of its proper divisors (1558076696).

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

1399088944 is a wasteful number, since it uses less digits than its factorization.

1399088944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7949388 (or 7949382 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 55.

The square root of 1399088944 is about 37404.3973885424. The cubic root of 1399088944 is about 1118.4462255497.

The spelling of 1399088944 in words is "one billion, three hundred ninety-nine million, eighty-eight thousand, nine hundred forty-four".