1397055886 has 32 divisors (see below), whose sum is σ = 2257567200. Its totient is φ = 646066176.

The previous prime is 1397055859. The next prime is 1397055893. The reversal of 1397055886 is 6885507931.

It is a congruent number.

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, 489981 + ... + 492823.

It is an arithmetic number, because the mean of its divisors is an integer number (70548975).

Almost surely, 2^1397055886 is an apocalyptic number.

1397055886 is a deficient number, since it is larger than the sum of its proper divisors (860511314).

1397055886 is a wasteful number, since it uses less digits than its factorization.

1397055886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3108.

The product of its (nonzero) digits is 1814400, while the sum is 52.

The square root of 1397055886 is about 37377.2107841128. The cubic root of 1397055886 is about 1117.9042137036.

The spelling of 1397055886 in words is "one billion, three hundred ninety-seven million, fifty-five thousand, eight hundred eighty-six".