447047749 has 2 divisors, whose sum is σ = 447047750. Its totient is φ = 447047748.

The previous prime is 447047701. The next prime is 447047753. The reversal of 447047749 is 947740744.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 372104100 + 74943649 = 19290^2 + 8657^2 .

It is a cyclic number.

It is not a de Polignac number, because 447047749 - 2²³ = 438659141 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 447047699 and 447047708.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (447347749) 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, 223523874 + 223523875.

It is an arithmetic number, because the mean of its divisors is an integer number (223523875).

Almost surely, 2^447047749 is an apocalyptic number.

It is an amenable number.

447047749 is a deficient number, since it is larger than the sum of its proper divisors (1).

447047749 is an equidigital number, since it uses as much as digits as its factorization.

447047749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 790272, while the sum is 46.

The square root of 447047749 is about 21143.5037068126. The cubic root of 447047749 is about 764.6299484686.

The spelling of 447047749 in words is "four hundred forty-seven million, forty-seven thousand, seven hundred forty-nine".