9799974 has 32 divisors (see below), whose sum is σ = 21882240. Its totient is φ = 3251016.

The previous prime is 9799969. The next prime is 9799987. The reversal of 9799974 is 4799979.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 9799974.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18477 + ... + 18999.

It is an arithmetic number, because the mean of its divisors is an integer number (683820).

Almost surely, 2^9799974 is an apocalyptic number.

9799974 is an abundant number, since it is smaller than the sum of its proper divisors (12082266).

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

9799974 is a wasteful number, since it uses less digits than its factorization.

9799974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 881 (or 875 counting only the distinct ones).

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

The square root of 9799974 is about 3130.4910157993. The cubic root of 9799974 is about 213.9973068634.

The spelling of 9799974 in words is "nine million, seven hundred ninety-nine thousand, nine hundred seventy-four".