4428491509 has 8 divisors (see below), whose sum is σ = 4770235232. Its totient is φ = 4086903600.

The previous prime is 4428491437. The next prime is 4428491531. The reversal of 4428491509 is 9051948244.

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

It is not a de Polignac number, because 4428491509 - 2¹⁷ = 4428360437 is a prime.

It is a super-2 number, since 2×4428491509² = 39223074090570194162, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4428491579) 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, 23842 + ... + 97084.

It is an arithmetic number, because the mean of its divisors is an integer number (596279404).

Almost surely, 2^4428491509 is an apocalyptic number.

It is an amenable number.

4428491509 is a deficient number, since it is larger than the sum of its proper divisors (341743723).

4428491509 is a wasteful number, since it uses less digits than its factorization.

4428491509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77907.

The product of its (nonzero) digits is 414720, while the sum is 46.

The square root of 4428491509 is about 66546.9120921474. The cubic root of 4428491509 is about 1642.1718584260.

The spelling of 4428491509 in words is "four billion, four hundred twenty-eight million, four hundred ninety-one thousand, five hundred nine".