447957649 has 4 divisors (see below), whose sum is σ = 448001136. Its totient is φ = 447914164.

The previous prime is 447957647. The next prime is 447957689. The reversal of 447957649 is 946759744.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 447957649 - 2¹ = 447957647 is a prime.

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 447957649.

It is not an unprimeable number, because it can be changed into a prime (447957641) 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, 3402 + ... + 30124.

It is an arithmetic number, because the mean of its divisors is an integer number (112000284).

Almost surely, 2^447957649 is an apocalyptic number.

It is an amenable number.

447957649 is a deficient number, since it is larger than the sum of its proper divisors (43487).

447957649 is a wasteful number, since it uses less digits than its factorization.

447957649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43486.

The product of its digits is 7620480, while the sum is 55.

The square root of 447957649 is about 21165.0100165344. The cubic root of 447957649 is about 765.1483608764.

It can be divided in two parts, 4479 and 57649, that added together give a triangular number (62128 = T₃₅₂).

The spelling of 447957649 in words is "four hundred forty-seven million, nine hundred fifty-seven thousand, six hundred forty-nine".