9979489 has 8 divisors (see below), whose sum is σ = 11094272. Its totient is φ = 8914320.

The previous prime is 9979471. The next prime is 9979511. The reversal of 9979489 is 9849799.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9979489 - 2¹⁷ = 9848417 is a prime.

It is a super-2 number, since 2×9979489² = 199180401402242, which contains 22 as substring.

It is a Duffinian number.

9979489 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9979469) 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, 11979 + ... + 12784.

It is an arithmetic number, because the mean of its divisors is an integer number (1386784).

Almost surely, 2^9979489 is an apocalyptic number.

It is an amenable number.

9979489 is a deficient number, since it is larger than the sum of its proper divisors (1114783).

9979489 is a wasteful number, since it uses less digits than its factorization.

9979489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24807.

The product of its digits is 1469664, while the sum is 55.

The square root of 9979489 is about 3159.0329216392. The cubic root of 9979489 is about 215.2960694804.

The spelling of 9979489 in words is "nine million, nine hundred seventy-nine thousand, four hundred eighty-nine".