9427644988 has 24 divisors (see below), whose sum is σ = 16626137472. Its totient is φ = 4677419184.

The previous prime is 9427644983. The next prime is 9427644991. The reversal of 9427644988 is 8894467249.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9427644983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 380095 + ... + 404137.

It is an arithmetic number, because the mean of its divisors is an integer number (692755728).

Almost surely, 2^9427644988 is an apocalyptic number.

It is an amenable number.

9427644988 is a deficient number, since it is larger than the sum of its proper divisors (7198492484).

9427644988 is a wasteful number, since it uses less digits than its factorization.

9427644988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24801 (or 24799 counting only the distinct ones).

The product of its digits is 27869184, while the sum is 61.

The square root of 9427644988 is about 97096.0606203980. The cubic root of 9427644988 is about 2112.5211874583.

The spelling of 9427644988 in words is "nine billion, four hundred twenty-seven million, six hundred forty-four thousand, nine hundred eighty-eight".