397011913 has 4 divisors (see below), whose sum is σ = 398521728. Its totient is φ = 395502100.

The previous prime is 397011869. The next prime is 397011919. The reversal of 397011913 is 319110793.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 397011913 - 2⁹ = 397011401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (397011919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 754513 + ... + 755038.

It is an arithmetic number, because the mean of its divisors is an integer number (99630432).

Almost surely, 2^397011913 is an apocalyptic number.

It is an amenable number.

397011913 is a deficient number, since it is larger than the sum of its proper divisors (1509815).

397011913 is a wasteful number, since it uses less digits than its factorization.

397011913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1509814.

The product of its (nonzero) digits is 5103, while the sum is 34.

The square root of 397011913 is about 19925.1577910942. The cubic root of 397011913 is about 734.9670110296.

It can be divided in two parts, 39701 and 1913, that added together give a palindrome (41614).

The spelling of 397011913 in words is "three hundred ninety-seven million, eleven thousand, nine hundred thirteen".