398142498 has 16 divisors (see below), whose sum is σ = 857537856. Its totient is φ = 122505360.

The previous prime is 398142491. The next prime is 398142523. The reversal of 398142498 is 894241893.

It is not an unprimeable number, because it can be changed into a prime (398142491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2552118 + ... + 2552273.

It is an arithmetic number, because the mean of its divisors is an integer number (53596116).

Almost surely, 2^398142498 is an apocalyptic number.

398142498 is an abundant number, since it is smaller than the sum of its proper divisors (459395358).

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

398142498 is a wasteful number, since it uses less digits than its factorization.

398142498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5104409.

The product of its digits is 497664, while the sum is 48.

The square root of 398142498 is about 19953.5084133092. The cubic root of 398142498 is about 735.6640137543.

The spelling of 398142498 in words is "three hundred ninety-eight million, one hundred forty-two thousand, four hundred ninety-eight".