399412497 has 8 divisors (see below), whose sum is σ = 580963680. Its totient is φ = 242068160.

The previous prime is 399412487. The next prime is 399412513. The reversal of 399412497 is 794214993.

It is a happy number.

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 399412497 - 2⁷ = 399412369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (399412487) 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, 6051672 + ... + 6051737.

It is an arithmetic number, because the mean of its divisors is an integer number (72620460).

Almost surely, 2^399412497 is an apocalyptic number.

It is an amenable number.

399412497 is a deficient number, since it is larger than the sum of its proper divisors (181551183).

399412497 is a wasteful number, since it uses less digits than its factorization.

399412497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12103423.

The product of its digits is 489888, while the sum is 48.

The square root of 399412497 is about 19985.3070279143. The cubic root of 399412497 is about 736.4453930493.

The spelling of 399412497 in words is "three hundred ninety-nine million, four hundred twelve thousand, four hundred ninety-seven".