998641498 has 16 divisors (see below), whose sum is σ = 1513160064. Its totient is φ = 494275680.

The previous prime is 998641487. The next prime is 998641559. The reversal of 998641498 is 894146899.

It is a happy 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, 95593 + ... + 105523.

It is an arithmetic number, because the mean of its divisors is an integer number (94572504).

Almost surely, 2^998641498 is an apocalyptic number.

998641498 is a deficient number, since it is larger than the sum of its proper divisors (514518566).

998641498 is a wasteful number, since it uses less digits than its factorization.

998641498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10437.

The product of its digits is 4478976, while the sum is 58.

The square root of 998641498 is about 31601.2894990062. The cubic root of 998641498 is about 999.5469607865.

The spelling of 998641498 in words is "nine hundred ninety-eight million, six hundred forty-one thousand, four hundred ninety-eight".