398521056000 has 144 divisors (see below), whose sum is σ = 1323688006368. Its totient is φ = 106272256000.

The previous prime is 398521055983. The next prime is 398521056001. The reversal of 398521056000 is 650125893.

It is a self number, because there is not a number n which added to its sum of digits gives 398521056000.

It is not an unprimeable number, because it can be changed into a prime (398521056001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1979631 + ... + 2171630.

It is an arithmetic number, because the mean of its divisors is an integer number (9192277822).

Almost surely, 2^398521056000 is an apocalyptic number.

398521056000 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

398521056000 is an abundant number, since it is smaller than the sum of its proper divisors (925166950368).

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

398521056000 is an equidigital number, since it uses as much as digits as its factorization.

398521056000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4151295 (or 4151271 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 39.

The spelling of 398521056000 in words is "three hundred ninety-eight billion, five hundred twenty-one million, fifty-six thousand".