447615013 has 2 divisors, whose sum is σ = 447615014. Its totient is φ = 447615012.

The previous prime is 447614969. The next prime is 447615017. The reversal of 447615013 is 310516744.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 281669089 + 165945924 = 16783^2 + 12882^2 .

It is a cyclic number.

It is not a de Polignac number, because 447615013 - 2⁹ = 447614501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (447615017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 223807506 + 223807507.

It is an arithmetic number, because the mean of its divisors is an integer number (223807507).

Almost surely, 2^447615013 is an apocalyptic number.

It is an amenable number.

447615013 is a deficient number, since it is larger than the sum of its proper divisors (1).

447615013 is an equidigital number, since it uses as much as digits as its factorization.

447615013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 447615013 is about 21156.9140708186. The cubic root of 447615013 is about 764.9532276643.

The spelling of 447615013 in words is "four hundred forty-seven million, six hundred fifteen thousand, thirteen".