448078209 has 4 divisors (see below), whose sum is σ = 597437616. Its totient is φ = 298718804.

The previous prime is 448078207. The next prime is 448078219. The reversal of 448078209 is 902870844.

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 448078209 - 2¹ = 448078207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (448078207) 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, 74679699 + ... + 74679704.

It is an arithmetic number, because the mean of its divisors is an integer number (149359404).

Almost surely, 2^448078209 is an apocalyptic number.

It is an amenable number.

448078209 is a deficient number, since it is larger than the sum of its proper divisors (149359407).

448078209 is a wasteful number, since it uses less digits than its factorization.

448078209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149359406.

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 448078209 is about 21167.8579218588. The cubic root of 448078209 is about 765.2169968381.

The spelling of 448078209 in words is "four hundred forty-eight million, seventy-eight thousand, two hundred nine".