450649836 has 144 divisors (see below), whose sum is σ = 1412855808. Its totient is φ = 117936000.

The previous prime is 450649807. The next prime is 450649873. The reversal of 450649836 is 638946054.

It is a junction number, because it is equal to n+sod(n) for n = 450649791 and 450649800.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 494221 + ... + 495131.

Almost surely, 2^450649836 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 450649836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (706427904).

450649836 is an abundant number, since it is smaller than the sum of its proper divisors (962205972).

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

450649836 is a wasteful number, since it uses less digits than its factorization.

450649836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1092 (or 1087 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The square root of 450649836 is about 21228.5146913297. The cubic root of 450649836 is about 766.6781256846.

The spelling of 450649836 in words is "four hundred fifty million, six hundred forty-nine thousand, eight hundred thirty-six".