1397089392 has 20 divisors (see below), whose sum is σ = 3609147720. Its totient is φ = 465696448.

The previous prime is 1397089387. The next prime is 1397089459. The reversal of 1397089392 is 2939807931.

It is a happy number.

It is a congruent number.

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, 14552967 + ... + 14553062.

It is an arithmetic number, because the mean of its divisors is an integer number (180457386).

Almost surely, 2^1397089392 is an apocalyptic number.

1397089392 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1397089392 is an abundant number, since it is smaller than the sum of its proper divisors (2212058328).

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

1397089392 is a wasteful number, since it uses less digits than its factorization.

1397089392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29106040 (or 29106034 counting only the distinct ones).

The product of its (nonzero) digits is 734832, while the sum is 51.

The square root of 1397089392 is about 37377.6589957156. The cubic root of 1397089392 is about 1117.9131506401.

The spelling of 1397089392 in words is "one billion, three hundred ninety-seven million, eighty-nine thousand, three hundred ninety-two".