399569701 has 8 divisors (see below), whose sum is σ = 408360960. Its totient is φ = 390790608.

The previous prime is 399569699. The next prime is 399569741. The reversal of 399569701 is 107965993.

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 399569701 - 2¹ = 399569699 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 (399569741) 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, 103335 + ... + 107131.

It is an arithmetic number, because the mean of its divisors is an integer number (51045120).

Almost surely, 2^399569701 is an apocalyptic number.

It is an amenable number.

399569701 is a deficient number, since it is larger than the sum of its proper divisors (8791259).

399569701 is a wasteful number, since it uses less digits than its factorization.

399569701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6083.

The product of its (nonzero) digits is 459270, while the sum is 49.

The square root of 399569701 is about 19989.2396303611. The cubic root of 399569701 is about 736.5419990869.

The spelling of 399569701 in words is "three hundred ninety-nine million, five hundred sixty-nine thousand, seven hundred one".