447545023 has 4 divisors (see below), whose sum is σ = 462977640. Its totient is φ = 432112408.

The previous prime is 447545003. The next prime is 447545069. The reversal of 447545023 is 320545744.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-447545023 is a prime.

It is a super-2 number, since 2×447545023² = 400593095224141058, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 447545023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (447545003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7716265 + ... + 7716322.

It is an arithmetic number, because the mean of its divisors is an integer number (115744410).

Almost surely, 2^447545023 is an apocalyptic number.

447545023 is a deficient number, since it is larger than the sum of its proper divisors (15432617).

447545023 is a wasteful number, since it uses less digits than its factorization.

447545023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15432616.

The product of its (nonzero) digits is 67200, while the sum is 34.

The square root of 447545023 is about 21155.2599369519. The cubic root of 447545023 is about 764.9133557017.

The spelling of 447545023 in words is "four hundred forty-seven million, five hundred forty-five thousand, twenty-three".