998749492 has 24 divisors (see below), whose sum is σ = 1883299712. Its totient is φ = 460706400.

The previous prime is 998749489. The next prime is 998749513. The reversal of 998749492 is 294947899.

It is a self number, because there is not a number n which added to its sum of digits gives 998749492.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116017 + ... + 124327.

Almost surely, 2^998749492 is an apocalyptic number.

It is an amenable number.

998749492 is a deficient number, since it is larger than the sum of its proper divisors (884550220).

998749492 is a wasteful number, since it uses less digits than its factorization.

998749492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10639 (or 10637 counting only the distinct ones).

The product of its digits is 11757312, while the sum is 61.

The square root of 998749492 is about 31602.9981489099. The cubic root of 998749492 is about 999.5829901269.

The spelling of 998749492 in words is "nine hundred ninety-eight million, seven hundred forty-nine thousand, four hundred ninety-two".