4421028993 has 24 divisors (see below), whose sum is σ = 6328512288. Its totient is φ = 2735811072.

The previous prime is 4421028979. The next prime is 4421029021. The reversal of 4421028993 is 3998201244.

It is not a de Polignac number, because 4421028993 - 2⁴ = 4421028977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4421028943) 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, 263646 + ... + 279912.

It is an arithmetic number, because the mean of its divisors is an integer number (263688012).

Almost surely, 2^4421028993 is an apocalyptic number.

It is an amenable number.

4421028993 is a deficient number, since it is larger than the sum of its proper divisors (1907483295).

4421028993 is a wasteful number, since it uses less digits than its factorization.

4421028993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16433 (or 16360 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 4421028993 is about 66490.8188624565. The cubic root of 4421028993 is about 1641.2489238527.

The spelling of 4421028993 in words is "four billion, four hundred twenty-one million, twenty-eight thousand, nine hundred ninety-three".