447897629 has 2 divisors, whose sum is σ = 447897630. Its totient is φ = 447897628.

The previous prime is 447897587. The next prime is 447897661. The reversal of 447897629 is 926798744.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 334048729 + 113848900 = 18277^2 + 10670^2 .

It is a cyclic number.

It is not a de Polignac number, because 447897629 - 2¹² = 447893533 is a prime.

It is a super-2 number, since 2×447897629² = 401224572127643282, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (447897029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 223948814 + 223948815.

It is an arithmetic number, because the mean of its divisors is an integer number (223948815).

Almost surely, 2^447897629 is an apocalyptic number.

It is an amenable number.

447897629 is a deficient number, since it is larger than the sum of its proper divisors (1).

447897629 is an equidigital number, since it uses as much as digits as its factorization.

447897629 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6096384, while the sum is 56.

The square root of 447897629 is about 21163.5920627856. The cubic root of 447897629 is about 765.1141863244.

The spelling of 447897629 in words is "four hundred forty-seven million, eight hundred ninety-seven thousand, six hundred twenty-nine".