9997974 has 24 divisors (see below), whose sum is σ = 24757200. Its totient is φ = 2856528.

The previous prime is 9997969. The next prime is 9997987. The reversal of 9997974 is 4797999.

It is a self number, because there is not a number n which added to its sum of digits gives 9997974.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39549 + ... + 39800.

It is an arithmetic number, because the mean of its divisors is an integer number (1031550).

Almost surely, 2^9997974 is an apocalyptic number.

9997974 is an abundant number, since it is smaller than the sum of its proper divisors (14759226).

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

9997974 is a wasteful number, since it uses less digits than its factorization.

9997974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79364 (or 79361 counting only the distinct ones).

The product of its digits is 1285956, while the sum is 54.

The square root of 9997974 is about 3161.9573052146. The cubic root of 9997974 is about 215.4289184049.

The spelling of 9997974 in words is "nine million, nine hundred ninety-seven thousand, nine hundred seventy-four".