399436607 has 8 divisors (see below), whose sum is σ = 441321696. Its totient is φ = 359594752.

The previous prime is 399436603. The next prime is 399436619. The reversal of 399436607 is 706634993.

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 399436607 - 2² = 399436603 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 (399436603) 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, 510398 + ... + 511179.

It is an arithmetic number, because the mean of its divisors is an integer number (55165212).

Almost surely, 2^399436607 is an apocalyptic number.

399436607 is a deficient number, since it is larger than the sum of its proper divisors (41885089).

399436607 is a wasteful number, since it uses less digits than its factorization.

399436607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1021617.

The product of its (nonzero) digits is 734832, while the sum is 47.

The square root of 399436607 is about 19985.9102119468. The cubic root of 399436607 is about 736.4602109308.

The spelling of 399436607 in words is "three hundred ninety-nine million, four hundred thirty-six thousand, six hundred seven".