448791439 has 4 divisors (see below), whose sum is σ = 457259256. Its totient is φ = 440323624.

The previous prime is 448791401. The next prime is 448791451. The reversal of 448791439 is 934197844.

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

It is a cyclic number.

It is not a de Polignac number, because 448791439 - 2²⁵ = 415237007 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 448791392 and 448791401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (448791839) 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, 4233829 + ... + 4233934.

It is an arithmetic number, because the mean of its divisors is an integer number (114314814).

Almost surely, 2^448791439 is an apocalyptic number.

448791439 is a deficient number, since it is larger than the sum of its proper divisors (8467817).

448791439 is an equidigital number, since it uses as much as digits as its factorization.

448791439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8467816.

The product of its digits is 870912, while the sum is 49.

The square root of 448791439 is about 21184.6982277303. The cubic root of 448791439 is about 765.6227938495.

The spelling of 448791439 in words is "four hundred forty-eight million, seven hundred ninety-one thousand, four hundred thirty-nine".