981216924 has 48 divisors (see below), whose sum is σ = 2413918080. Its totient is φ = 309355200.

The previous prime is 981216923. The next prime is 981216941. The reversal of 981216924 is 429612189.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981216923) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 152574 + ... + 158874.

It is an arithmetic number, because the mean of its divisors is an integer number (50289960).

Almost surely, 2^981216924 is an apocalyptic number.

It is an amenable number.

981216924 is an abundant number, since it is smaller than the sum of its proper divisors (1432701156).

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

981216924 is a wasteful number, since it uses less digits than its factorization.

981216924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7010 (or 7008 counting only the distinct ones).

The product of its digits is 62208, while the sum is 42.

The square root of 981216924 is about 31324.3822604692. The cubic root of 981216924 is about 993.6993599764.

The spelling of 981216924 in words is "nine hundred eighty-one million, two hundred sixteen thousand, nine hundred twenty-four".