398375296 has 64 divisors (see below), whose sum is σ = 893813760. Its totient is φ = 175219200.

The previous prime is 398375287. The next prime is 398375317. The reversal of 398375296 is 692573893.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39085 + ... + 48211.

It is an arithmetic number, because the mean of its divisors is an integer number (13965840).

Almost surely, 2^398375296 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 398375296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (446906880).

398375296 is an abundant number, since it is smaller than the sum of its proper divisors (495438464).

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

398375296 is a wasteful number, since it uses less digits than its factorization.

398375296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9183 (or 9171 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 52.

The square root of 398375296 is about 19959.3410712879. The cubic root of 398375296 is about 735.8073692475.

The spelling of 398375296 in words is "three hundred ninety-eight million, three hundred seventy-five thousand, two hundred ninety-six".