397634111 has 16 divisors (see below), whose sum is σ = 460696320. Its totient is φ = 336156480.

The previous prime is 397634087. The next prime is 397634141. The reversal of 397634111 is 111436793.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 397634111 - 2²² = 393439807 is a prime.

It is a super-2 number, since 2×397634111² = 316225772461520642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397634141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 489896 + ... + 490706.

It is an arithmetic number, because the mean of its divisors is an integer number (28793520).

Almost surely, 2^397634111 is an apocalyptic number.

397634111 is a deficient number, since it is larger than the sum of its proper divisors (63062209).

397634111 is an equidigital number, since it uses as much as digits as its factorization.

397634111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1694.

The product of its digits is 13608, while the sum is 35.

The square root of 397634111 is about 19940.7650555339. The cubic root of 397634111 is about 735.3507579701.

The spelling of 397634111 in words is "three hundred ninety-seven million, six hundred thirty-four thousand, one hundred eleven".