398312376 has 192 divisors, whose sum is σ = 1296207360. Its totient is φ = 100800000.

The previous prime is 398312353. The next prime is 398312377. The reversal of 398312376 is 673213893.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398312377) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 530001 + ... + 530751.

It is an arithmetic number, because the mean of its divisors is an integer number (6751080).

Almost surely, 2^398312376 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 398312376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (648103680).

398312376 is an abundant number, since it is smaller than the sum of its proper divisors (897894984).

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

398312376 is a wasteful number, since it uses less digits than its factorization.

398312376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826 (or 815 counting only the distinct ones).

The product of its digits is 163296, while the sum is 42.

The square root of 398312376 is about 19957.7648047070. The cubic root of 398312376 is about 735.7686290297.

The spelling of 398312376 in words is "three hundred ninety-eight million, three hundred twelve thousand, three hundred seventy-six".