447485135973 has 4 divisors (see below), whose sum is σ = 596646847968. Its totient is φ = 298323423980.

The previous prime is 447485135953. The next prime is 447485135987. The reversal of 447485135973 is 379531584744.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-447485135973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (447485135953) 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, 74580855993 + ... + 74580855998.

It is an arithmetic number, because the mean of its divisors is an integer number (149161711992).

Almost surely, 2^447485135973 is an apocalyptic number.

It is an amenable number.

447485135973 is a deficient number, since it is larger than the sum of its proper divisors (149161711995).

447485135973 is a wasteful number, since it uses less digits than its factorization.

447485135973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149161711994.

The product of its digits is 50803200, while the sum is 60.

The spelling of 447485135973 in words is "four hundred forty-seven billion, four hundred eighty-five million, one hundred thirty-five thousand, nine hundred seventy-three".