397791199 has 8 divisors (see below), whose sum is σ = 429526160. Its totient is φ = 366218496.

The previous prime is 397791193. The next prime is 397791217. The reversal of 397791199 is 991197793.

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 397791199 - 2⁵ = 397791167 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 (397791193) 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, 35442 + ... + 45295.

It is an arithmetic number, because the mean of its divisors is an integer number (53690770).

Almost surely, 2^397791199 is an apocalyptic number.

397791199 is a deficient number, since it is larger than the sum of its proper divisors (31734961).

397791199 is a wasteful number, since it uses less digits than its factorization.

397791199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81129.

The product of its digits is 964467, while the sum is 55.

The square root of 397791199 is about 19944.7035325171. The cubic root of 397791199 is about 735.4475802902.

The spelling of 397791199 in words is "three hundred ninety-seven million, seven hundred ninety-one thousand, one hundred ninety-nine".