4509398012 has 48 divisors (see below), whose sum is σ = 9321811968. Its totient is φ = 1867829760.

The previous prime is 4509397999. The next prime is 4509398021. The reversal of 4509398012 is 2108939054.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 766988 + ... + 772844.

It is an arithmetic number, because the mean of its divisors is an integer number (194204416).

Almost surely, 2^4509398012 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 4509398012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4660905984).

4509398012 is an abundant number, since it is smaller than the sum of its proper divisors (4812413956).

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

4509398012 is a wasteful number, since it uses less digits than its factorization.

4509398012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6786 (or 6784 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 4509398012 is about 67152.0514355295. The cubic root of 4509398012 is about 1652.1121420159.

The spelling of 4509398012 in words is "four billion, five hundred nine million, three hundred ninety-eight thousand, twelve".