9997443980 has 24 divisors (see below), whose sum is σ = 22229611488. Its totient is φ = 3763743488.

The previous prime is 9997443979. The next prime is 9997444043. The reversal of 9997443980 is 893447999.

It is a happy number.

9997443980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×9997443980² (a number of 21 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 14701784 + ... + 14702463.

It is an arithmetic number, because the mean of its divisors is an integer number (926233812).

Almost surely, 2^9997443980 is an apocalyptic number.

It is an amenable number.

9997443980 is an abundant number, since it is smaller than the sum of its proper divisors (12232167508).

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

9997443980 is a wasteful number, since it uses less digits than its factorization.

9997443980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29404273 (or 29404271 counting only the distinct ones).

The product of its (nonzero) digits is 17635968, while the sum is 62.

The square root of 9997443980 is about 99987.2190832408. The cubic root of 9997443980 is about 2154.2511151184.

The spelling of 9997443980 in words is "nine billion, nine hundred ninety-seven million, four hundred forty-three thousand, nine hundred eighty".