447689447 has 2 divisors, whose sum is σ = 447689448. Its totient is φ = 447689446.

The previous prime is 447689353. The next prime is 447689453. The reversal of 447689447 is 744986744.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 447689447 - 2²⁴ = 430912231 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 (447689497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 223844723 + 223844724.

It is an arithmetic number, because the mean of its divisors is an integer number (223844724).

Almost surely, 2^447689447 is an apocalyptic number.

447689447 is a deficient number, since it is larger than the sum of its proper divisors (1).

447689447 is an equidigital number, since it uses as much as digits as its factorization.

447689447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5419008, while the sum is 53.

The square root of 447689447 is about 21158.6730916662. The cubic root of 447689447 is about 764.9956267282.

The spelling of 447689447 in words is "four hundred forty-seven million, six hundred eighty-nine thousand, four hundred forty-seven".