399499662 has 32 divisors (see below), whose sum is σ = 841950720. Its totient is φ = 126023040.

The previous prime is 399499657. The next prime is 399499663. The reversal of 399499662 is 266994993.

It is a super-2 number, since 2×399499662² = 319199959876228488, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399499663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 212358 + ... + 214230.

It is an arithmetic number, because the mean of its divisors is an integer number (26310960).

Almost surely, 2^399499662 is an apocalyptic number.

399499662 is an abundant number, since it is smaller than the sum of its proper divisors (442451058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

399499662 is a wasteful number, since it uses less digits than its factorization.

399499662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3768.

The product of its digits is 5668704, while the sum is 57.

The square root of 399499662 is about 19987.4876360187. The cubic root of 399499662 is about 736.4989613896.

The spelling of 399499662 in words is "three hundred ninety-nine million, four hundred ninety-nine thousand, six hundred sixty-two".