447240077 has 2 divisors, whose sum is σ = 447240078. Its totient is φ = 447240076.

The previous prime is 447240047. The next prime is 447240089. The reversal of 447240077 is 770042744.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 236728996 + 210511081 = 15386^2 + 14509^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-447240077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (447240047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 223620038 + 223620039.

It is an arithmetic number, because the mean of its divisors is an integer number (223620039).

Almost surely, 2^447240077 is an apocalyptic number.

It is an amenable number.

447240077 is a deficient number, since it is larger than the sum of its proper divisors (1).

447240077 is an equidigital number, since it uses as much as digits as its factorization.

447240077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43904, while the sum is 35.

The square root of 447240077 is about 21148.0513759542. The cubic root of 447240077 is about 764.7395852765.

The spelling of 447240077 in words is "four hundred forty-seven million, two hundred forty thousand, seventy-seven".