397197151 has 6 divisors (see below), whose sum is σ = 430101240. Its totient is φ = 366643368.

The previous prime is 397197133. The next prime is 397197167. The reversal of 397197151 is 151791793.

It is not a de Polignac number, because 397197151 - 2⁷ = 397197023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 397197098 and 397197107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397197131) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1174971 + ... + 1175308.

It is an arithmetic number, because the mean of its divisors is an integer number (71683540).

Almost surely, 2^397197151 is an apocalyptic number.

397197151 is a deficient number, since it is larger than the sum of its proper divisors (32904089).

397197151 is a wasteful number, since it uses less digits than its factorization.

397197151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2350305 (or 2350292 counting only the distinct ones).

The product of its digits is 59535, while the sum is 43.

The square root of 397197151 is about 19929.8055936329. The cubic root of 397197151 is about 735.0813003378.

The spelling of 397197151 in words is "three hundred ninety-seven million, one hundred ninety-seven thousand, one hundred fifty-one".