998451772 has 24 divisors (see below), whose sum is σ = 1767531920. Its totient is φ = 493464960.

The previous prime is 998451757. The next prime is 998451799. The reversal of 998451772 is 277154899.

998451772 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent 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, 196747 + ... + 201757.

Almost surely, 2^998451772 is an apocalyptic number.

It is an amenable number.

998451772 is a deficient number, since it is larger than the sum of its proper divisors (769080148).

998451772 is a wasteful number, since it uses less digits than its factorization.

998451772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5581 (or 5579 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 52.

The square root of 998451772 is about 31598.2874852420. The cubic root of 998451772 is about 999.4836574362.

The spelling of 998451772 in words is "nine hundred ninety-eight million, four hundred fifty-one thousand, seven hundred seventy-two".