399038464 has 48 divisors (see below), whose sum is σ = 870465960. Its totient is φ = 181370880.

The previous prime is 399038461. The next prime is 399038473. The reversal of 399038464 is 464830993.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399038461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13672 + ... + 31384.

Almost surely, 2^399038464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 399038464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (435232980).

399038464 is an abundant number, since it is smaller than the sum of its proper divisors (471427496).

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

399038464 is a wasteful number, since it uses less digits than its factorization.

399038464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17746 (or 17726 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 46.

The square root of 399038464 is about 19975.9471364939. The cubic root of 399038464 is about 736.2154378772.

The spelling of 399038464 in words is "three hundred ninety-nine million, thirty-eight thousand, four hundred sixty-four".