992478972798 has 32 divisors (see below), whose sum is σ = 2205915129120. Its totient is φ = 330765379200.

The previous prime is 992478972761. The next prime is 992478972803. The reversal of 992478972798 is 897279874299.

It is a happy number.

992478972798 is a `hidden beast` number, since 9 + 9 + 2 + 478 + 9 + 72 + 79 + 8 = 666.

It is a super-2 number, since 2×992478972798² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1396603 + ... + 1983798.

It is an arithmetic number, because the mean of its divisors is an integer number (68934847785).

Almost surely, 2^992478972798 is an apocalyptic number.

992478972798 is an abundant number, since it is smaller than the sum of its proper divisors (1213436156322).

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

992478972798 is a wasteful number, since it uses less digits than its factorization.

992478972798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3385849 (or 3385843 counting only the distinct ones).

The product of its digits is 2304433152, while the sum is 81.

The spelling of 992478972798 in words is "nine hundred ninety-two billion, four hundred seventy-eight million, nine hundred seventy-two thousand, seven hundred ninety-eight".