13951447 has 2 divisors, whose sum is σ = 13951448. Its totient is φ = 13951446.

The previous prime is 13951423. The next prime is 13951451. The reversal of 13951447 is 74415931.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13951447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13951417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6975723 + 6975724.

It is an arithmetic number, because the mean of its divisors is an integer number (6975724).

Almost surely, 2^13951447 is an apocalyptic number.

13951447 is a deficient number, since it is larger than the sum of its proper divisors (1).

13951447 is an equidigital number, since it uses as much as digits as its factorization.

13951447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 34.

The square root of 13951447 is about 3735.1635841018. The cubic root of 13951447 is about 240.7352855221.

The spelling of 13951447 in words is "thirteen million, nine hundred fifty-one thousand, four hundred forty-seven".