448839640 has 16 divisors (see below), whose sum is σ = 1009889280. Its totient is φ = 179535840.

The previous prime is 448839631. The next prime is 448839649. The reversal of 448839640 is 46938844.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (448839631) and next prime (448839649).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (448839649) 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, 5610456 + ... + 5610535.

It is an arithmetic number, because the mean of its divisors is an integer number (63118080).

Almost surely, 2^448839640 is an apocalyptic number.

448839640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

448839640 is an abundant number, since it is smaller than the sum of its proper divisors (561049640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

448839640 is a wasteful number, since it uses less digits than its factorization.

448839640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11221002 (or 11220998 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 46.

The square root of 448839640 is about 21185.8358343493. The cubic root of 448839640 is about 765.6502026189.

The spelling of 448839640 in words is "four hundred forty-eight million, eight hundred thirty-nine thousand, six hundred forty".