13669973 has 2 divisors, whose sum is σ = 13669974. Its totient is φ = 13669972.

The previous prime is 13669967. The next prime is 13669979. The reversal of 13669973 is 37996631.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (13669967) and next prime (13669979).

It can be written as a sum of positive squares in only one way, i.e., 11242609 + 2427364 = 3353^2 + 1558^2 .

It is a cyclic number.

It is not a de Polignac number, because 13669973 - 2¹² = 13665877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13669979) 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 as a sum of consecutive naturals, namely, 6834986 + 6834987.

It is an arithmetic number, because the mean of its divisors is an integer number (6834987).

Almost surely, 2^13669973 is an apocalyptic number.

It is an amenable number.

13669973 is a deficient number, since it is larger than the sum of its proper divisors (1).

13669973 is an equidigital number, since it uses as much as digits as its factorization.

13669973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 183708, while the sum is 44.

The square root of 13669973 is about 3697.2926581487. The cubic root of 13669973 is about 239.1053088901.

The spelling of 13669973 in words is "thirteen million, six hundred sixty-nine thousand, nine hundred seventy-three".