397190397 has 8 divisors (see below), whose sum is σ = 560739456. Its totient is φ = 249217472.

The previous prime is 397190393. The next prime is 397190461. The reversal of 397190397 is 793091793.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 397190397 - 2² = 397190393 is a prime.

It is a super-2 number, since 2×397190397² = 315520422938035218, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397190393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3893973 + ... + 3894074.

It is an arithmetic number, because the mean of its divisors is an integer number (70092432).

Almost surely, 2^397190397 is an apocalyptic number.

It is an amenable number.

397190397 is a deficient number, since it is larger than the sum of its proper divisors (163549059).

397190397 is a wasteful number, since it uses less digits than its factorization.

397190397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7788067.

The product of its (nonzero) digits is 321489, while the sum is 48.

The square root of 397190397 is about 19929.6361482090. The cubic root of 397190397 is about 735.0771338366.

The spelling of 397190397 in words is "three hundred ninety-seven million, one hundred ninety thousand, three hundred ninety-seven".