9979389 has 48 divisors (see below), whose sum is σ = 18148800. Its totient is φ = 5388768.

The previous prime is 9979337. The next prime is 9979399. The reversal of 9979389 is 9839799.

It is a happy number.

It is not a de Polignac number, because 9979389 - 2⁷ = 9979261 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9979399) 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 47 ways as a sum of consecutive naturals, for example, 24939 + ... + 25335.

It is an arithmetic number, because the mean of its divisors is an integer number (378100).

Almost surely, 2^9979389 is an apocalyptic number.

It is an amenable number.

9979389 is a deficient number, since it is larger than the sum of its proper divisors (8169411).

9979389 is a wasteful number, since it uses less digits than its factorization.

9979389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439 (or 426 counting only the distinct ones).

The product of its digits is 1102248, while the sum is 54.

The square root of 9979389 is about 3159.0170939708. The cubic root of 9979389 is about 215.2953503494.

The spelling of 9979389 in words is "nine million, nine hundred seventy-nine thousand, three hundred eighty-nine".