398868596 has 48 divisors (see below), whose sum is σ = 841666560. Its totient is φ = 161572320.

The previous prime is 398868593. The next prime is 398868601. The reversal of 398868596 is 695868893.

It is a super-2 number, since 2×398868596² = 318192313750022432, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398868593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 437381 + ... + 438291.

It is an arithmetic number, because the mean of its divisors is an integer number (17534720).

Almost surely, 2^398868596 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 398868596, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (420833280).

398868596 is an abundant number, since it is smaller than the sum of its proper divisors (442797964).

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

398868596 is a wasteful number, since it uses less digits than its factorization.

398868596 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1764 (or 1762 counting only the distinct ones).

The product of its digits is 22394880, while the sum is 62.

The square root of 398868596 is about 19971.6948704911. The cubic root of 398868596 is about 736.1109557240.

The spelling of 398868596 in words is "three hundred ninety-eight million, eight hundred sixty-eight thousand, five hundred ninety-six".