397276122191 has 16 divisors (see below), whose sum is σ = 450494738400. Its totient is φ = 347306600448.

The previous prime is 397276122181. The next prime is 397276122227. The reversal of 397276122191 is 191221672793.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-397276122191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397276122121) 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, 542015 + ... + 1043231.

It is an arithmetic number, because the mean of its divisors is an integer number (28155921150).

Almost surely, 2^397276122191 is an apocalyptic number.

397276122191 is a deficient number, since it is larger than the sum of its proper divisors (53218616209).

397276122191 is a wasteful number, since it uses less digits than its factorization.

397276122191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504458.

The product of its digits is 571536, while the sum is 50.

The spelling of 397276122191 in words is "three hundred ninety-seven billion, two hundred seventy-six million, one hundred twenty-two thousand, one hundred ninety-one".