13806973 has 2 divisors, whose sum is σ = 13806974. Its totient is φ = 13806972.

The previous prime is 13806971. The next prime is 13806979. The reversal of 13806973 is 37960831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13675204 + 131769 = 3698^2 + 363^2 .

It is a cyclic number.

It is not a de Polignac number, because 13806973 - 2¹ = 13806971 is a prime.

Together with 13806971, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13806971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6903486 + 6903487.

It is an arithmetic number, because the mean of its divisors is an integer number (6903487).

Almost surely, 2^13806973 is an apocalyptic number.

It is an amenable number.

13806973 is a deficient number, since it is larger than the sum of its proper divisors (1).

13806973 is an equidigital number, since it uses as much as digits as its factorization.

13806973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 13806973 is about 3715.7735399241. The cubic root of 13806973 is about 239.9014236372.

The spelling of 13806973 in words is "thirteen million, eight hundred six thousand, nine hundred seventy-three".