397152243 has 6 divisors (see below), whose sum is σ = 573664364. Its totient is φ = 264768156.

The previous prime is 397152229. The next prime is 397152263. The reversal of 397152243 is 342251793.

397152243 is a `hidden beast` number, since 3 + 97 + 1 + 522 + 43 = 666.

It is not a de Polignac number, because 397152243 - 2⁴ = 397152227 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 397152198 and 397152207.

It is not an unprimeable number, because it can be changed into a prime (397152263) 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, 22064005 + ... + 22064022.

Almost surely, 2^397152243 is an apocalyptic number.

397152243 is a deficient number, since it is larger than the sum of its proper divisors (176512121).

397152243 is a wasteful number, since it uses less digits than its factorization.

397152243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44128033 (or 44128030 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 397152243 is about 19928.6789075443. The cubic root of 397152243 is about 735.0535959806.

The spelling of 397152243 in words is "three hundred ninety-seven million, one hundred fifty-two thousand, two hundred forty-three".