9749999 has 12 divisors (see below), whose sum is σ = 11652816. Its totient is φ = 7990752.

The previous prime is 9749989. The next prime is 9750001. The reversal of 9749999 is 9999479.

It is not a de Polignac number, because 9749999 - 2⁸ = 9749743 is a prime.

9749999 is a modest number, since divided by 9999 gives 974 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9749989) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2387 + ... + 5019.

It is an arithmetic number, because the mean of its divisors is an integer number (971068).

Almost surely, 2^9749999 is an apocalyptic number.

9749999 is a deficient number, since it is larger than the sum of its proper divisors (1902817).

9749999 is a wasteful number, since it uses less digits than its factorization.

9749999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2686 (or 2663 counting only the distinct ones).

The product of its digits is 1653372, while the sum is 56.

The square root of 9749999 is about 3122.4988390710. The cubic root of 9749999 is about 213.6329267812.

The spelling of 9749999 in words is "nine million, seven hundred forty-nine thousand, nine hundred ninety-nine".