447870216489 has 4 divisors (see below), whose sum is σ = 597160288656. Its totient is φ = 298580144324.

The previous prime is 447870216473. The next prime is 447870216511. The reversal of 447870216489 is 984612078744.

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 not a de Polignac number, because 447870216489 - 2⁴ = 447870216473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (447870216089) 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, 74645036079 + ... + 74645036084.

It is an arithmetic number, because the mean of its divisors is an integer number (149290072164).

Almost surely, 2^447870216489 is an apocalyptic number.

It is an amenable number.

447870216489 is a deficient number, since it is larger than the sum of its proper divisors (149290072167).

447870216489 is a wasteful number, since it uses less digits than its factorization.

447870216489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149290072166.

The product of its (nonzero) digits is 21676032, while the sum is 60.

The spelling of 447870216489 in words is "four hundred forty-seven billion, eight hundred seventy million, two hundred sixteen thousand, four hundred eighty-nine".