448644915 has 12 divisors (see below), whose sum is σ = 777651264. Its totient is φ = 239277264.

The previous prime is 448644913. The next prime is 448644941. The reversal of 448644915 is 519446844.

It is not a de Polignac number, because 448644915 - 2¹ = 448644913 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 9969887 = 448644915 / (4 + 4 + 8 + 6 + 4 + 4 + 9 + 1 + 5).

It is not an unprimeable number, because it can be changed into a prime (448644913) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4984899 + ... + 4984988.

It is an arithmetic number, because the mean of its divisors is an integer number (64804272).

Almost surely, 2^448644915 is an apocalyptic number.

448644915 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

448644915 is a deficient number, since it is larger than the sum of its proper divisors (329006349).

448644915 is a wasteful number, since it uses less digits than its factorization.

448644915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9969898 (or 9969895 counting only the distinct ones).

The product of its digits is 552960, while the sum is 45.

The square root of 448644915 is about 21181.2396945977. The cubic root of 448644915 is about 765.5394631415.

The spelling of 448644915 in words is "four hundred forty-eight million, six hundred forty-four thousand, nine hundred fifteen".