1390977458 has 16 divisors (see below), whose sum is σ = 2256871680. Its totient is φ = 639158736.

The previous prime is 1390977443. The next prime is 1390977461. The reversal of 1390977458 is 8547790931.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111938 + ... + 123741.

It is an arithmetic number, because the mean of its divisors is an integer number (141054480).

Almost surely, 2^1390977458 is an apocalyptic number.

1390977458 is a deficient number, since it is larger than the sum of its proper divisors (865894222).

1390977458 is a wasteful number, since it uses less digits than its factorization.

1390977458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235921.

The product of its (nonzero) digits is 1905120, while the sum is 53.

The square root of 1390977458 is about 37295.8101936397. The cubic root of 1390977458 is about 1116.2805661627.

The spelling of 1390977458 in words is "one billion, three hundred ninety million, nine hundred seventy-seven thousand, four hundred fifty-eight".