399098592 has 144 divisors (see below), whose sum is σ = 1181089728. Its totient is φ = 127733760.

The previous prime is 399098563. The next prime is 399098593. The reversal of 399098592 is 295890993.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×399098592² = 318559372272764928, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399098593) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 861753 + ... + 862215.

It is an arithmetic number, because the mean of its divisors is an integer number (8202012).

Almost surely, 2^399098592 is an apocalyptic number.

399098592 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 399098592, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (590544864).

399098592 is an abundant number, since it is smaller than the sum of its proper divisors (781991136).

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

399098592 is a wasteful number, since it uses less digits than its factorization.

399098592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593 (or 582 counting only the distinct ones).

The product of its (nonzero) digits is 1574640, while the sum is 54.

The square root of 399098592 is about 19977.4520897936. The cubic root of 399098592 is about 736.2524142113.

The spelling of 399098592 in words is "three hundred ninety-nine million, ninety-eight thousand, five hundred ninety-two".