447660977 has 2 divisors, whose sum is σ = 447660978. Its totient is φ = 447660976.

The previous prime is 447660973. The next prime is 447661007. The reversal of 447660977 is 779066744.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 446223376 + 1437601 = 21124^2 + 1199^2 .

It is a cyclic number.

It is not a de Polignac number, because 447660977 - 2² = 447660973 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (447660973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 223830488 + 223830489.

It is an arithmetic number, because the mean of its divisors is an integer number (223830489).

Almost surely, 2^447660977 is an apocalyptic number.

It is an amenable number.

447660977 is a deficient number, since it is larger than the sum of its proper divisors (1).

447660977 is an equidigital number, since it uses as much as digits as its factorization.

447660977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1778112, while the sum is 50.

The square root of 447660977 is about 21158.0003072124. Note that the first 3 decimals coincide. The cubic root of 447660977 is about 764.9794102138.

The spelling of 447660977 in words is "four hundred forty-seven million, six hundred sixty thousand, nine hundred seventy-seven".