996981044 has 12 divisors (see below), whose sum is σ = 1746939264. Its totient is φ = 497855544.

The previous prime is 996981017. The next prime is 996981067. The reversal of 996981044 is 440189699.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 996980983 and 996981001.

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 3 ways as a sum of consecutive naturals, for example, 155204 + ... + 161499.

It is an arithmetic number, because the mean of its divisors is an integer number (145578272).

Almost surely, 2^996981044 is an apocalyptic number.

It is an amenable number.

996981044 is a deficient number, since it is larger than the sum of its proper divisors (749958220).

996981044 is a wasteful number, since it uses less digits than its factorization.

996981044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317494 (or 317492 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 50.

The square root of 996981044 is about 31575.0066349953. The cubic root of 996981044 is about 998.9926669542.

The spelling of 996981044 in words is "nine hundred ninety-six million, nine hundred eighty-one thousand, forty-four".