398253498 has 8 divisors (see below), whose sum is σ = 796507008. Its totient is φ = 132751164.

The previous prime is 398253473. The next prime is 398253521. The reversal of 398253498 is 894352893.

It is a sphenic number, since it is the product of 3 distinct primes.

398253498 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 398253498.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33187786 + ... + 33187797.

It is an arithmetic number, because the mean of its divisors is an integer number (99563376).

Almost surely, 2^398253498 is an apocalyptic number.

398253498 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

398253498 is a wasteful number, since it uses less digits than its factorization.

398253498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66375588.

The product of its digits is 1866240, while the sum is 51.

The square root of 398253498 is about 19956.2896852095. The cubic root of 398253498 is about 735.7323738000.

The spelling of 398253498 in words is "three hundred ninety-eight million, two hundred fifty-three thousand, four hundred ninety-eight".