4509454021 has 8 divisors (see below), whose sum is σ = 4554665024. Its totient is φ = 4464270720.

The previous prime is 4509453979. The next prime is 4509454043. The reversal of 4509454021 is 1204549054.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4509454021 - 2²¹ = 4507356869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4509454121) 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, 511765 + ... + 520501.

It is an arithmetic number, because the mean of its divisors is an integer number (569333128).

Almost surely, 2^4509454021 is an apocalyptic number.

It is an amenable number.

4509454021 is a deficient number, since it is larger than the sum of its proper divisors (45211003).

4509454021 is a wasteful number, since it uses less digits than its factorization.

4509454021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13851.

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 4509454021 is about 67152.4684654258. The cubic root of 4509454021 is about 1652.1189820099.

The spelling of 4509454021 in words is "four billion, five hundred nine million, four hundred fifty-four thousand, twenty-one".