9976977444 has 192 divisors, whose sum is σ = 29396828160. Its totient is φ = 2567790720.

The previous prime is 9976977431. The next prime is 9976977457. The reversal of 9976977444 is 4447796799.

It is an interprime number because it is at equal distance from previous prime (9976977431) and next prime (9976977457).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7010517 + ... + 7011939.

It is an arithmetic number, because the mean of its divisors is an integer number (153108480).

Almost surely, 2^9976977444 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9976977444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14698414080).

9976977444 is an abundant number, since it is smaller than the sum of its proper divisors (19419850716).

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

9976977444 is a wasteful number, since it uses less digits than its factorization.

9976977444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1670 (or 1668 counting only the distinct ones).

The product of its digits is 96018048, while the sum is 66.

The square root of 9976977444 is about 99884.8208888618. The cubic root of 9976977444 is about 2152.7800664827.

The spelling of 9976977444 in words is "nine billion, nine hundred seventy-six million, nine hundred seventy-seven thousand, four hundred forty-four".