447651249 has 4 divisors (see below), whose sum is σ = 596868336. Its totient is φ = 298434164.

The previous prime is 447651247. The next prime is 447651283. The reversal of 447651249 is 942156744.

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 447651249 - 2¹ = 447651247 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 447651249.

It is not an unprimeable number, because it can be changed into a prime (447651241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74608539 + ... + 74608544.

It is an arithmetic number, because the mean of its divisors is an integer number (149217084).

Almost surely, 2^447651249 is an apocalyptic number.

It is an amenable number.

447651249 is a deficient number, since it is larger than the sum of its proper divisors (149217087).

447651249 is a wasteful number, since it uses less digits than its factorization.

447651249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149217086.

The product of its digits is 241920, while the sum is 42.

The square root of 447651249 is about 21157.7704165633. The cubic root of 447651249 is about 764.9738689865.

The spelling of 447651249 in words is "four hundred forty-seven million, six hundred fifty-one thousand, two hundred forty-nine".