398844056 has 48 divisors (see below), whose sum is σ = 815374800. Its totient is φ = 182812032.

The previous prime is 398844031. The next prime is 398844059. The reversal of 398844056 is 650448893.

It is a super-2 number, since 2×398844056² = 318153162013062272, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 398844056.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398844059) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 211325 + ... + 213203.

It is an arithmetic number, because the mean of its divisors is an integer number (16986975).

Almost surely, 2^398844056 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 398844056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (407687400).

398844056 is an abundant number, since it is smaller than the sum of its proper divisors (416530744).

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

398844056 is a wasteful number, since it uses less digits than its factorization.

398844056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2068 (or 2051 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 47.

The square root of 398844056 is about 19971.0804915508. The cubic root of 398844056 is about 736.0958592457.

The spelling of 398844056 in words is "three hundred ninety-eight million, eight hundred forty-four thousand, fifty-six".