397087199 has 2 divisors, whose sum is σ = 397087200. Its totient is φ = 397087198.

The previous prime is 397087181. The next prime is 397087231. The reversal of 397087199 is 991780793.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 397087199 - 2²⁴ = 380309983 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 397087199.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (397087399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198543599 + 198543600.

It is an arithmetic number, because the mean of its divisors is an integer number (198543600).

Almost surely, 2^397087199 is an apocalyptic number.

397087199 is a deficient number, since it is larger than the sum of its proper divisors (1).

397087199 is an equidigital number, since it uses as much as digits as its factorization.

397087199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 857304, while the sum is 53.

The square root of 397087199 is about 19927.0469212074. The cubic root of 397087199 is about 735.0134657474.

The spelling of 397087199 in words is "three hundred ninety-seven million, eighty-seven thousand, one hundred ninety-nine".