998055474 has 64 divisors (see below), whose sum is σ = 2231107200. Its totient is φ = 295529472.

The previous prime is 998055467. The next prime is 998055547. The reversal of 998055474 is 474550899.

It is a super-2 number, since 2×998055474² = 1992229458362729352, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 978937 + ... + 979955.

It is an arithmetic number, because the mean of its divisors is an integer number (34861050).

Almost surely, 2^998055474 is an apocalyptic number.

998055474 is the 16887-th nonagonal number.

It is a practical number, because each smaller number is the sum of distinct divisors of 998055474, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1115553600).

998055474 is an abundant number, since it is smaller than the sum of its proper divisors (1233051726).

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

998055474 is a wasteful number, since it uses less digits than its factorization.

998055474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1499.

The product of its (nonzero) digits is 1814400, while the sum is 51.

The square root of 998055474 is about 31592.0159850555. The cubic root of 998055474 is about 999.3514040810.

The spelling of 998055474 in words is "nine hundred ninety-eight million, fifty-five thousand, four hundred seventy-four".