13942493 has 2 divisors, whose sum is σ = 13942494. Its totient is φ = 13942492.

The previous prime is 13942477. The next prime is 13942519. The reversal of 13942493 is 39424931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13675204 + 267289 = 3698^2 + 517^2 .

It is a cyclic number.

It is not a de Polignac number, because 13942493 - 2⁴ = 13942477 is a prime.

It is a super-2 number, since 2×13942493² = 388786222110098, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13942403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6971246 + 6971247.

It is an arithmetic number, because the mean of its divisors is an integer number (6971247).

Almost surely, 2^13942493 is an apocalyptic number.

It is an amenable number.

13942493 is a deficient number, since it is larger than the sum of its proper divisors (1).

13942493 is an equidigital number, since it uses as much as digits as its factorization.

13942493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 35.

The square root of 13942493 is about 3733.9647829084. The cubic root of 13942493 is about 240.6837734208.

The spelling of 13942493 in words is "thirteen million, nine hundred forty-two thousand, four hundred ninety-three".