447787849 has 4 divisors (see below), whose sum is σ = 450132480. Its totient is φ = 445443220.

The previous prime is 447787829. The next prime is 447787859. The reversal of 447787849 is 948787744.

It is a happy number.

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 447787849 - 2⁵ = 447787817 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 447787793 and 447787802.

It is not an unprimeable number, because it can be changed into a prime (447787829) 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, 1172029 + ... + 1172410.

It is an arithmetic number, because the mean of its divisors is an integer number (112533120).

Almost surely, 2^447787849 is an apocalyptic number.

It is an amenable number.

447787849 is a deficient number, since it is larger than the sum of its proper divisors (2344631).

447787849 is a wasteful number, since it uses less digits than its factorization.

447787849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2344630.

The product of its digits is 12644352, while the sum is 58.

The square root of 447787849 is about 21160.9982987571. The cubic root of 447787849 is about 765.0516712218.

The spelling of 447787849 in words is "four hundred forty-seven million, seven hundred eighty-seven thousand, eight hundred forty-nine".