13964491 has 2 divisors, whose sum is σ = 13964492. Its totient is φ = 13964490.

The previous prime is 13964453. The next prime is 13964507. The reversal of 13964491 is 19446931.

13964491 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13964491 - 2⁹ = 13963979 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13964491.

It is not a weakly prime, because it can be changed into another prime (13964441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6982245 + 6982246.

It is an arithmetic number, because the mean of its divisors is an integer number (6982246).

Almost surely, 2^13964491 is an apocalyptic number.

13964491 is a deficient number, since it is larger than the sum of its proper divisors (1).

13964491 is an equidigital number, since it uses as much as digits as its factorization.

13964491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 37.

The square root of 13964491 is about 3736.9092844221. The cubic root of 13964491 is about 240.8102878483.

The spelling of 13964491 in words is "thirteen million, nine hundred sixty-four thousand, four hundred ninety-one".