13723973 has 2 divisors, whose sum is σ = 13723974. Its totient is φ = 13723972.

The previous prime is 13723961. The next prime is 13723987. The reversal of 13723973 is 37932731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10029889 + 3694084 = 3167^2 + 1922^2 .

It is an emirp because it is prime and its reverse (37932731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13723973 - 2¹² = 13719877 is a prime.

It is a super-3 number, since 3×13723973³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13723903) 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, 6861986 + 6861987.

It is an arithmetic number, because the mean of its divisors is an integer number (6861987).

Almost surely, 2^13723973 is an apocalyptic number.

It is an amenable number.

13723973 is a deficient number, since it is larger than the sum of its proper divisors (1).

13723973 is an equidigital number, since it uses as much as digits as its factorization.

13723973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23814, while the sum is 35.

The square root of 13723973 is about 3704.5881012604. The cubic root of 13723973 is about 239.4197382448.

The spelling of 13723973 in words is "thirteen million, seven hundred twenty-three thousand, nine hundred seventy-three".