398551360 has 56 divisors (see below), whose sum is σ = 990331776. Its totient is φ = 152486400.

The previous prime is 398551327. The next prime is 398551403. The reversal of 398551360 is 63155893.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a zygodrome in base 4.

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, 19716 + ... + 34435.

It is an arithmetic number, because the mean of its divisors is an integer number (17684496).

Almost surely, 2^398551360 is an apocalyptic number.

It is an amenable number.

398551360 is an abundant number, since it is smaller than the sum of its proper divisors (591780416).

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

398551360 is a wasteful number, since it uses less digits than its factorization.

398551360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54191 (or 54181 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 40.

The square root of 398551360 is about 19963.7511505228. The cubic root of 398551360 is about 735.9157512261.

The spelling of 398551360 in words is "three hundred ninety-eight million, five hundred fifty-one thousand, three hundred sixty".