998951992 has 8 divisors (see below), whose sum is σ = 1873035000. Its totient is φ = 499475992.

The previous prime is 998951983. The next prime is 998952001. The reversal of 998951992 is 299159899.

998951992 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (998951983) and next prime (998952001).

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 998951992.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62434492 + ... + 62434507.

It is an arithmetic number, because the mean of its divisors is an integer number (234129375).

Almost surely, 2^998951992 is an apocalyptic number.

It is an amenable number.

998951992 is a deficient number, since it is larger than the sum of its proper divisors (874083008).

998951992 is a wasteful number, since it uses less digits than its factorization.

998951992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124869005 (or 124869001 counting only the distinct ones).

The product of its digits is 4723920, while the sum is 61.

The square root of 998951992 is about 31606.2017964829. The cubic root of 998951992 is about 999.6505418933.

The spelling of 998951992 in words is "nine hundred ninety-eight million, nine hundred fifty-one thousand, nine hundred ninety-two".