9749979 has 12 divisors (see below), whose sum is σ = 14209416. Its totient is φ = 6441792.

The previous prime is 9749963. The next prime is 9749989. The reversal of 9749979 is 9799479.

It is not a de Polignac number, because 9749979 - 2⁴ = 9749963 is a prime.

9749979 is a lucky number.

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

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3777 + ... + 5810.

It is an arithmetic number, because the mean of its divisors is an integer number (1184118).

Almost surely, 2^9749979 is an apocalyptic number.

9749979 is a deficient number, since it is larger than the sum of its proper divisors (4459437).

9749979 is a wasteful number, since it uses less digits than its factorization.

9749979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9706 (or 9703 counting only the distinct ones).

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

The square root of 9749979 is about 3122.4956365062. The cubic root of 9749979 is about 213.6327807073.

The spelling of 9749979 in words is "nine million, seven hundred forty-nine thousand, nine hundred seventy-nine".