450398886 has 48 divisors (see below), whose sum is σ = 1049868864. Its totient is φ = 128439696.

The previous prime is 450398881. The next prime is 450398939. The reversal of 450398886 is 688893054.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (450398881) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 199681 + ... + 201923.

It is an arithmetic number, because the mean of its divisors is an integer number (21872268).

Almost surely, 2^450398886 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 450398886, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (524934432).

450398886 is an abundant number, since it is smaller than the sum of its proper divisors (599469978).

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

450398886 is a wasteful number, since it uses less digits than its factorization.

450398886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2945 (or 2938 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 51.

The square root of 450398886 is about 21222.6031862258. The cubic root of 450398886 is about 766.5357878247.

The spelling of 450398886 in words is "four hundred fifty million, three hundred ninety-eight thousand, eight hundred eighty-six".