399196907 has 8 divisors (see below), whose sum is σ = 432509616. Its totient is φ = 366976512.

The previous prime is 399196877. The next prime is 399196933. The reversal of 399196907 is 709691993.

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 399196907 - 2¹⁶ = 399131371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (399196607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 272318 + ... + 273779.

It is an arithmetic number, because the mean of its divisors is an integer number (54063702).

Almost surely, 2^399196907 is an apocalyptic number.

399196907 is a deficient number, since it is larger than the sum of its proper divisors (33312709).

399196907 is a wasteful number, since it uses less digits than its factorization.

399196907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546157.

The product of its (nonzero) digits is 826686, while the sum is 53.

The square root of 399196907 is about 19979.9125873964. The cubic root of 399196907 is about 736.3128660349.

The spelling of 399196907 in words is "three hundred ninety-nine million, one hundred ninety-six thousand, nine hundred seven".