447501641 has 2 divisors, whose sum is σ = 447501642. Its totient is φ = 447501640.

The previous prime is 447501629. The next prime is 447501679. The reversal of 447501641 is 146105744.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 433514041 + 13987600 = 20821^2 + 3740^2 .

It is a cyclic number.

It is not a de Polignac number, because 447501641 - 2⁶ = 447501577 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 447501598 and 447501607.

It is not a weakly prime, because it can be changed into another prime (447501541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 223750820 + 223750821.

It is an arithmetic number, because the mean of its divisors is an integer number (223750821).

Almost surely, 2^447501641 is an apocalyptic number.

It is an amenable number.

447501641 is a deficient number, since it is larger than the sum of its proper divisors (1).

447501641 is an equidigital number, since it uses as much as digits as its factorization.

447501641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 447501641 is about 21154.2345879023. The cubic root of 447501641 is about 764.8886397202. Note that the first 3 decimals are identical.

The spelling of 447501641 in words is "four hundred forty-seven million, five hundred one thousand, six hundred forty-one".