397363556689 has 16 divisors (see below), whose sum is σ = 439645354560. Its totient is φ = 356113013760.

The previous prime is 397363556663. The next prime is 397363556693. The reversal of 397363556689 is 986655363793.

It is a cyclic number.

It is not a de Polignac number, because 397363556689 - 2³⁷ = 259924603217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (397363556659) 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, 1496982 + ... + 1742320.

It is an arithmetic number, because the mean of its divisors is an integer number (27477834660).

Almost surely, 2^397363556689 is an apocalyptic number.

It is an amenable number.

397363556689 is a deficient number, since it is larger than the sum of its proper divisors (42281797871).

397363556689 is a wasteful number, since it uses less digits than its factorization.

397363556689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247440.

The product of its digits is 661348800, while the sum is 70.

The spelling of 397363556689 in words is "three hundred ninety-seven billion, three hundred sixty-three million, five hundred fifty-six thousand, six hundred eighty-nine".