399692707 has 8 divisors (see below), whose sum is σ = 403697840. Its totient is φ = 395707680.

The previous prime is 399692701. The next prime is 399692717. The reversal of 399692707 is 707296993.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-399692707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (399692701) 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, 36628 + ... + 46270.

It is an arithmetic number, because the mean of its divisors is an integer number (50462230).

Almost surely, 2^399692707 is an apocalyptic number.

399692707 is a deficient number, since it is larger than the sum of its proper divisors (4005133).

399692707 is a wasteful number, since it uses less digits than its factorization.

399692707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10053.

The product of its (nonzero) digits is 1285956, while the sum is 52.

The square root of 399692707 is about 19992.3161989800. The cubic root of 399692707 is about 736.6175718756.

The spelling of 399692707 in words is "three hundred ninety-nine million, six hundred ninety-two thousand, seven hundred seven".