404448489 has 12 divisors (see below), whose sum is σ = 596633856. Its totient is φ = 263895192.

The previous prime is 404448463. The next prime is 404448493. The reversal of 404448489 is 984844404.

It is not a de Polignac number, because 404448489 - 2¹⁹ = 403924201 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (404448419) 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, 477649 + ... + 478494.

It is an arithmetic number, because the mean of its divisors is an integer number (49719488).

Almost surely, 2^404448489 is an apocalyptic number.

It is an amenable number.

404448489 is a deficient number, since it is larger than the sum of its proper divisors (192185367).

404448489 is a wasteful number, since it uses less digits than its factorization.

404448489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 956196 (or 956193 counting only the distinct ones).

The product of its (nonzero) digits is 589824, while the sum is 45.

The square root of 404448489 is about 20110.9047285297. The cubic root of 404448489 is about 739.5276319414.

The spelling of 404448489 in words is "four hundred four million, four hundred forty-eight thousand, four hundred eighty-nine".