9975926847 has 4 divisors (see below), whose sum is σ = 13301235800. Its totient is φ = 6650617896.

The previous prime is 9975926837. The next prime is 9975926869. The reversal of 9975926847 is 7486295799.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 9975926847 - 2⁸ = 9975926591 is a prime.

It is a super-2 number, since 2×9975926847² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9975926837) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1662654472 + ... + 1662654477.

It is an arithmetic number, because the mean of its divisors is an integer number (3325308950).

Almost surely, 2^9975926847 is an apocalyptic number.

9975926847 is a deficient number, since it is larger than the sum of its proper divisors (3325308953).

9975926847 is a wasteful number, since it uses less digits than its factorization.

9975926847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3325308952.

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

The square root of 9975926847 is about 99879.5617080892. The cubic root of 9975926847 is about 2152.7044997197.

The spelling of 9975926847 in words is "nine billion, nine hundred seventy-five million, nine hundred twenty-six thousand, eight hundred forty-seven".