1397549712 has 80 divisors (see below), whose sum is σ = 4092724160. Its totient is φ = 407379456.

The previous prime is 1397549669. The next prime is 1397549749. The reversal of 1397549712 is 2179457931.

It is a super-2 number, since 2×1397549712² = 3906290395022565888, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47083 + ... + 70794.

It is an arithmetic number, because the mean of its divisors is an integer number (51159052).

Almost surely, 2^1397549712 is an apocalyptic number.

1397549712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1397549712 is an abundant number, since it is smaller than the sum of its proper divisors (2695174448).

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

1397549712 is a wasteful number, since it uses less digits than its factorization.

1397549712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117920 (or 117914 counting only the distinct ones).

The product of its digits is 476280, while the sum is 48.

The square root of 1397549712 is about 37383.8161775921. The cubic root of 1397549712 is about 1118.0359156966.

The spelling of 1397549712 in words is "one billion, three hundred ninety-seven million, five hundred forty-nine thousand, seven hundred twelve".