399732032 has 112 divisors (see below), whose sum is σ = 963655680. Its totient is φ = 160704000.

The previous prime is 399732031. The next prime is 399732061. The reversal of 399732032 is 230237993.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399732031) 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, 1285157 + ... + 1285467.

Almost surely, 2^399732032 is an apocalyptic number.

399732032 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 399732032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (481827840).

399732032 is an abundant number, since it is smaller than the sum of its proper divisors (563923648).

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

399732032 is a wasteful number, since it uses less digits than its factorization.

399732032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500 (or 490 counting only the distinct ones).

The product of its (nonzero) digits is 61236, while the sum is 38.

The square root of 399732032 is about 19993.2996776420. The cubic root of 399732032 is about 736.6417292141.

The spelling of 399732032 in words is "three hundred ninety-nine million, seven hundred thirty-two thousand, thirty-two".