14661421 has 2 divisors, whose sum is σ = 14661422. Its totient is φ = 14661420.

The previous prime is 14661403. The next prime is 14661433. The reversal of 14661421 is 12416641.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11902500 + 2758921 = 3450^2 + 1661^2 .

It is a cyclic number.

It is not a de Polignac number, because 14661421 - 2⁹ = 14660909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14661401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7330710 + 7330711.

It is an arithmetic number, because the mean of its divisors is an integer number (7330711).

Almost surely, 2^14661421 is an apocalyptic number.

It is an amenable number.

14661421 is a deficient number, since it is larger than the sum of its proper divisors (1).

14661421 is an equidigital number, since it uses as much as digits as its factorization.

14661421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 25.

The square root of 14661421 is about 3829.0235047594. The cubic root of 14661421 is about 244.7514959098.

The spelling of 14661421 in words is "fourteen million, six hundred sixty-one thousand, four hundred twenty-one".