13120969 has 4 divisors (see below), whose sum is σ = 13129344. Its totient is φ = 13112596.

The previous prime is 13120949. The next prime is 13120979. The reversal of 13120969 is 96902131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 13120969 - 2⁷ = 13120841 is a prime.

It is a super-2 number, since 2×13120969² = 344319654997922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13120969.

It is not an unprimeable number, because it can be changed into a prime (13120909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1057 + ... + 5230.

It is an arithmetic number, because the mean of its divisors is an integer number (3282336).

Almost surely, 2^13120969 is an apocalyptic number.

It is an amenable number.

13120969 is a deficient number, since it is larger than the sum of its proper divisors (8375).

13120969 is an equidigital number, since it uses as much as digits as its factorization.

13120969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8374.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 13120969 is about 3622.2878129712. The cubic root of 13120969 is about 235.8605479407.

The spelling of 13120969 in words is "thirteen million, one hundred twenty thousand, nine hundred sixty-nine".