1391080976 has 10 divisors (see below), whose sum is σ = 2695219422. Its totient is φ = 695540480.

The previous prime is 1391080969. The next prime is 1391080997. The reversal of 1391080976 is 6790801931.

It can be written as a sum of positive squares in only one way, i.e., 863184400 + 527896576 = 29380^2 + 22976^2 .

It is a super-2 number, since 2×1391080976² = 3870212563578225152, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43471265 + ... + 43471296.

Almost surely, 2^1391080976 is an apocalyptic number.

1391080976 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1391080976 is a deficient number, since it is larger than the sum of its proper divisors (1304138446).

1391080976 is an equidigital number, since it uses as much as digits as its factorization.

1391080976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86942569 (or 86942563 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 1391080976 is about 37297.1979644584. The cubic root of 1391080976 is about 1116.3082570656.

The spelling of 1391080976 in words is "one billion, three hundred ninety-one million, eighty thousand, nine hundred seventy-six".