448644990 has 16 divisors (see below), whose sum is σ = 1076748048. Its totient is φ = 119638656.

The previous prime is 448644941. The next prime is 448644991. The reversal of 448644990 is 99446844.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (448644991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7477387 + ... + 7477446.

It is an arithmetic number, because the mean of its divisors is an integer number (67296753).

Almost surely, 2^448644990 is an apocalyptic number.

448644990 is an abundant number, since it is smaller than the sum of its proper divisors (628103058).

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

448644990 is a wasteful number, since it uses less digits than its factorization.

448644990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14954843.

The product of its (nonzero) digits is 995328, while the sum is 48.

The square root of 448644990 is about 21181.2414650322. The cubic root of 448644990 is about 765.5395058000.

The spelling of 448644990 in words is "four hundred forty-eight million, six hundred forty-four thousand, nine hundred ninety".