399985714 has 8 divisors (see below), whose sum is σ = 600197148. Its totient is φ = 199920000.

The previous prime is 399985697. The next prime is 399985757. The reversal of 399985714 is 417589993.

It can be written as a sum of positive squares in 2 ways, for example, as 366148225 + 33837489 = 19135^2 + 5817^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29287 + ... + 40714.

Almost surely, 2^399985714 is an apocalyptic number.

399985714 is a deficient number, since it is larger than the sum of its proper divisors (200211434).

399985714 is a wasteful number, since it uses less digits than its factorization.

399985714 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72860.

The product of its digits is 2449440, while the sum is 55.

The square root of 399985714 is about 19999.6428468110. The cubic root of 399985714 is about 736.7975279447.

The spelling of 399985714 in words is "three hundred ninety-nine million, nine hundred eighty-five thousand, seven hundred fourteen".