13019969 has 4 divisors (see below), whose sum is σ = 13440000. Its totient is φ = 12599940.

The previous prime is 13019957. The next prime is 13019971. The reversal of 13019969 is 96991031.

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 an emirpimes, since its reverse is a distinct semiprime: 96991031 = 163 ⋅595037.

It is a cyclic number.

It is not a de Polignac number, because 13019969 - 2⁴ = 13019953 is a prime.

It is a super-2 number, since 2×13019969² = 339039185521922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13019989) 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, 209969 + ... + 210030.

It is an arithmetic number, because the mean of its divisors is an integer number (3360000).

Almost surely, 2^13019969 is an apocalyptic number.

It is an amenable number.

13019969 is a deficient number, since it is larger than the sum of its proper divisors (420031).

13019969 is an equidigital number, since it uses as much as digits as its factorization.

13019969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420030.

The product of its (nonzero) digits is 13122, while the sum is 38.

The square root of 13019969 is about 3608.3194149077. The cubic root of 13019969 is about 235.2538015447.

The spelling of 13019969 in words is "thirteen million, nineteen thousand, nine hundred sixty-nine".