447538823 has 2 divisors, whose sum is σ = 447538824. Its totient is φ = 447538822.

The previous prime is 447538789. The next prime is 447538829. The reversal of 447538823 is 328835744.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 447538823 - 2¹² = 447534727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (447538829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 223769411 + 223769412.

It is an arithmetic number, because the mean of its divisors is an integer number (223769412).

Almost surely, 2^447538823 is an apocalyptic number.

447538823 is a deficient number, since it is larger than the sum of its proper divisors (1).

447538823 is an equidigital number, since it uses as much as digits as its factorization.

447538823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 645120, while the sum is 44.

The square root of 447538823 is about 21155.1134007833. The cubic root of 447538823 is about 764.9098234800.

The spelling of 447538823 in words is "four hundred forty-seven million, five hundred thirty-eight thousand, eight hundred twenty-three".