399368284 has 24 divisors (see below), whose sum is σ = 845722080. Its totient is φ = 161089536.

The previous prime is 399368237. The next prime is 399368293. The reversal of 399368284 is 482863993.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 419029 + ... + 419980.

It is an arithmetic number, because the mean of its divisors is an integer number (35238420).

Almost surely, 2^399368284 is an apocalyptic number.

399368284 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

399368284 is an abundant number, since it is smaller than the sum of its proper divisors (446353796).

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

399368284 is a wasteful number, since it uses less digits than its factorization.

399368284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839037 (or 839035 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 52.

The square root of 399368284 is about 19984.2008596791. The cubic root of 399368284 is about 736.4182184183.

The spelling of 399368284 in words is "three hundred ninety-nine million, three hundred sixty-eight thousand, two hundred eighty-four".