447138249 has 8 divisors (see below), whose sum is σ = 596344320. Its totient is φ = 298012176.

The previous prime is 447138221. The next prime is 447138259. The reversal of 447138249 is 942831744.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 447138249 - 2⁷ = 447138121 is a prime.

It is a super-2 number, since 2×447138249² = 399865227437572002, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 447138249.

It is not an unprimeable number, because it can be changed into a prime (447138259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5442 + ... + 30395.

It is an arithmetic number, because the mean of its divisors is an integer number (74543040).

Almost surely, 2^447138249 is an apocalyptic number.

It is an amenable number.

447138249 is a deficient number, since it is larger than the sum of its proper divisors (149206071).

447138249 is a wasteful number, since it uses less digits than its factorization.

447138249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39999.

The product of its digits is 193536, while the sum is 42.

The square root of 447138249 is about 21145.6437357674. The cubic root of 447138249 is about 764.6815420187.

The spelling of 447138249 in words is "four hundred forty-seven million, one hundred thirty-eight thousand, two hundred forty-nine".