998454996 has 72 divisors (see below), whose sum is σ = 3146654784. Its totient is φ = 259338240.

The previous prime is 998454973. The next prime is 998455021. The reversal of 998454996 is 699454899.

998454996 is a `hidden beast` number, since 9 + 9 + 84 + 549 + 9 + 6 = 666.

It is a super-3 number, since 3×998454996³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 177325 + ... + 182868.

Almost surely, 2^998454996 is an apocalyptic number.

It is an amenable number.

998454996 is an abundant number, since it is smaller than the sum of its proper divisors (2148199788).

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

998454996 is a wasteful number, since it uses less digits than its factorization.

998454996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360221 (or 360216 counting only the distinct ones).

The product of its digits is 25194240, while the sum is 63.

The square root of 998454996 is about 31598.3385006237. The cubic root of 998454996 is about 999.4847332124.

It can be divided in two parts, 9984 and 54996, that added together give a triangular number (64980 = T₃₆₀).

The spelling of 998454996 in words is "nine hundred ninety-eight million, four hundred fifty-four thousand, nine hundred ninety-six".