1397132912 has 80 divisors (see below), whose sum is σ = 3134275584. Its totient is φ = 590976000.

The previous prime is 1397132887. The next prime is 1397132917. The reversal of 1397132912 is 2192317931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1397132917) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5155337 + ... + 5155607.

Almost surely, 2^1397132912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1397132912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1567137792).

1397132912 is an abundant number, since it is smaller than the sum of its proper divisors (1737142672).

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

1397132912 is a wasteful number, since it uses less digits than its factorization.

1397132912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718 (or 712 counting only the distinct ones).

The product of its digits is 20412, while the sum is 38.

The square root of 1397132912 is about 37378.2411571224. The cubic root of 1397132912 is about 1117.9247583620.

The spelling of 1397132912 in words is "one billion, three hundred ninety-seven million, one hundred thirty-two thousand, nine hundred twelve".