399594672 has 90 divisors (see below), whose sum is σ = 1149918588. Its totient is φ = 129534336.

The previous prime is 399594653. The next prime is 399594677. The reversal of 399594672 is 276495993.

It is a super-3 number, since 3×399594672³ (a number of 27 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (399594677) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 196123 + ... + 198149.

Almost surely, 2^399594672 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 399594672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (574959294).

399594672 is an abundant number, since it is smaller than the sum of its proper divisors (750323916).

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

399594672 is a wasteful number, since it uses less digits than its factorization.

399594672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2115 (or 2069 counting only the distinct ones).

The product of its digits is 3674160, while the sum is 54.

The square root of 399594672 is about 19989.8642316550. The cubic root of 399594672 is about 736.5573420980.

The spelling of 399594672 in words is "three hundred ninety-nine million, five hundred ninety-four thousand, six hundred seventy-two".