9997924 has 24 divisors (see below), whose sum is σ = 18345600. Its totient is φ = 4761120.

The previous prime is 9997913. The next prime is 9997927. The reversal of 9997924 is 4297999.

It is not an unprimeable number, because it can be changed into a prime (9997927) 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, 8619 + ... + 9709.

It is an arithmetic number, because the mean of its divisors is an integer number (764400).

Almost surely, 2^9997924 is an apocalyptic number.

It is an amenable number.

9997924 is a deficient number, since it is larger than the sum of its proper divisors (8347676).

9997924 is a wasteful number, since it uses less digits than its factorization.

9997924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1203 (or 1201 counting only the distinct ones).

The product of its digits is 367416, while the sum is 49.

The square root of 9997924 is about 3161.9493987096. The cubic root of 9997924 is about 215.4285592833.

The spelling of 9997924 in words is "nine million, nine hundred ninety-seven thousand, nine hundred twenty-four".