448774309 has 4 divisors (see below), whose sum is σ = 448892460. Its totient is φ = 448656160.

The previous prime is 448774307. The next prime is 448774331. The reversal of 448774309 is 903477844.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 142874209 + 305900100 = 11953^2 + 17490^2 .

It is a cyclic number.

It is not a de Polignac number, because 448774309 - 2¹ = 448774307 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (448774307) 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, 53182 + ... + 61039.

It is an arithmetic number, because the mean of its divisors is an integer number (112223115).

Almost surely, 2^448774309 is an apocalyptic number.

It is an amenable number.

448774309 is a deficient number, since it is larger than the sum of its proper divisors (118151).

448774309 is a wasteful number, since it uses less digits than its factorization.

448774309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118150.

The product of its (nonzero) digits is 677376, while the sum is 46.

The square root of 448774309 is about 21184.2939226211. The cubic root of 448774309 is about 765.6130526615.

The spelling of 448774309 in words is "four hundred forty-eight million, seven hundred seventy-four thousand, three hundred nine".