9976578942 has 32 divisors (see below), whose sum is σ = 21770622720. Its totient is φ = 3022713920.

The previous prime is 9976578901. The next prime is 9976578943. The reversal of 9976578942 is 2498756799.

9976578942 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9976578943) 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, 793618 + ... + 806090.

It is an arithmetic number, because the mean of its divisors is an integer number (680331960).

Almost surely, 2^9976578942 is an apocalyptic number.

9976578942 is an abundant number, since it is smaller than the sum of its proper divisors (11794043778).

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

9976578942 is a wasteful number, since it uses less digits than its factorization.

9976578942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24608.

The product of its digits is 68584320, while the sum is 66.

The square root of 9976578942 is about 99882.8260613405. The cubic root of 9976578942 is about 2152.7514038746.

The spelling of 9976578942 in words is "nine billion, nine hundred seventy-six million, five hundred seventy-eight thousand, nine hundred forty-two".