13973749 has 2 divisors, whose sum is σ = 13973750. Its totient is φ = 13973748.

The previous prime is 13973731. The next prime is 13973761. The reversal of 13973749 is 94737931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13322500 + 651249 = 3650^2 + 807^2 .

It is a cyclic number.

It is not a de Polignac number, because 13973749 - 2¹⁷ = 13842677 is a prime.

It is a super-2 number, since 2×13973749² = 390531322230002, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13973789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6986874 + 6986875.

It is an arithmetic number, because the mean of its divisors is an integer number (6986875).

Almost surely, 2^13973749 is an apocalyptic number.

It is an amenable number.

13973749 is a deficient number, since it is larger than the sum of its proper divisors (1).

13973749 is an equidigital number, since it uses as much as digits as its factorization.

13973749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 142884, while the sum is 43.

The square root of 13973749 is about 3738.1478033914. The cubic root of 13973749 is about 240.8634925360.

The spelling of 13973749 in words is "thirteen million, nine hundred seventy-three thousand, seven hundred forty-nine".