398861232 has 160 divisors (see below), whose sum is σ = 1292488704. Its totient is φ = 102969600.

The previous prime is 398861219. The next prime is 398861233. The reversal of 398861232 is 232168893.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (398861233) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1149283 + ... + 1149629.

Almost surely, 2^398861232 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 398861232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (646244352).

398861232 is an abundant number, since it is smaller than the sum of its proper divisors (893627472).

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

398861232 is a wasteful number, since it uses less digits than its factorization.

398861232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687 (or 681 counting only the distinct ones).

The product of its digits is 124416, while the sum is 42.

The square root of 398861232 is about 19971.5105087222. The cubic root of 398861232 is about 736.1064256152.

The spelling of 398861232 in words is "three hundred ninety-eight million, eight hundred sixty-one thousand, two hundred thirty-two".