398530944 has 192 divisors, whose sum is σ = 1330561440. Its totient is φ = 112140288.

The previous prime is 398530943. The next prime is 398530967. The reversal of 398530944 is 449035893.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (192).

It is a super-2 number, since 2×398530944² = 317653826651062272, 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 398530944.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398530943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 588334 + ... + 589010.

Almost surely, 2^398530944 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 398530944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (665280720).

398530944 is an abundant number, since it is smaller than the sum of its proper divisors (932030496).

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

398530944 is a wasteful number, since it uses less digits than its factorization.

398530944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 777 (or 762 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The square root of 398530944 is about 19963.2398172241. The cubic root of 398530944 is about 735.9031851229.

The spelling of 398530944 in words is "three hundred ninety-eight million, five hundred thirty thousand, nine hundred forty-four".