864079199 has 2 divisors, whose sum is σ = 864079200. Its totient is φ = 864079198.

The previous prime is 864079189. The next prime is 864079217. The reversal of 864079199 is 991970468.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-864079199 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 864079199.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (864079129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432039599 + 432039600.

It is an arithmetic number, because the mean of its divisors is an integer number (432039600).

Almost surely, 2^864079199 is an apocalyptic number.

864079199 is a deficient number, since it is larger than the sum of its proper divisors (1).

864079199 is an equidigital number, since it uses as much as digits as its factorization.

864079199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 979776, while the sum is 53.

The square root of 864079199 is about 29395.2240848747. The cubic root of 864079199 is about 952.4697322769.

The spelling of 864079199 in words is "eight hundred sixty-four million, seventy-nine thousand, one hundred ninety-nine".