9980369 has 12 divisors (see below), whose sum is σ = 11662884. Its totient is φ = 8515584.

The previous prime is 9980363. The next prime is 9980389. The reversal of 9980369 is 9630899.

It can be written as a sum of positive squares in 2 ways, for example, as 7840000 + 2140369 = 2800^2 + 1463^2 .

It is a de Polignac number, because none of the positive numbers 2^k-9980369 is a prime.

It is a super-2 number, since 2×9980369² = 199215530752322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9980363) 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, 17009 + ... + 17585.

It is an arithmetic number, because the mean of its divisors is an integer number (971907).

Almost surely, 2^9980369 is an apocalyptic number.

It is an amenable number.

9980369 is a deficient number, since it is larger than the sum of its proper divisors (1682515).

9980369 is a wasteful number, since it uses less digits than its factorization.

9980369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 944 (or 937 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 44.

The square root of 9980369 is about 3159.1722017009. The cubic root of 9980369 is about 215.3023976258.

The spelling of 9980369 in words is "nine million, nine hundred eighty thousand, three hundred sixty-nine".