399083832 has 288 divisors, whose sum is σ = 1344470400. Its totient is φ = 106444800.

The previous prime is 399083807. The next prime is 399083843. The reversal of 399083832 is 238380993.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 4484044 + ... + 4484132.

It is an arithmetic number, because the mean of its divisors is an integer number (4668300).

Almost surely, 2^399083832 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 399083832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (672235200).

399083832 is an abundant number, since it is smaller than the sum of its proper divisors (945386568).

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

399083832 is a wasteful number, since it uses less digits than its factorization.

399083832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187 (or 173 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The square root of 399083832 is about 19977.0826698995. The cubic root of 399083832 is about 736.2433377409.

The spelling of 399083832 in words is "three hundred ninety-nine million, eighty-three thousand, eight hundred thirty-two".