14947421 has 2 divisors, whose sum is σ = 14947422. Its totient is φ = 14947420.

The previous prime is 14947399. The next prime is 14947453. The reversal of 14947421 is 12474941.

It is an a-pointer prime, because the next prime (14947453) can be obtained adding 14947421 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12859396 + 2088025 = 3586^2 + 1445^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14947421 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14947481) 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, 7473710 + 7473711.

It is an arithmetic number, because the mean of its divisors is an integer number (7473711).

Almost surely, 2^14947421 is an apocalyptic number.

It is an amenable number.

14947421 is a deficient number, since it is larger than the sum of its proper divisors (1).

14947421 is an equidigital number, since it uses as much as digits as its factorization.

14947421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 32.

The square root of 14947421 is about 3866.1894676800. The cubic root of 14947421 is about 246.3327123868.

The spelling of 14947421 in words is "fourteen million, nine hundred forty-seven thousand, four hundred twenty-one".