4385909820 has 48 divisors (see below), whose sum is σ = 12324297888. Its totient is φ = 1165409280.

The previous prime is 4385909779. The next prime is 4385909839. The reversal of 4385909820 is 289095834.

It is a self number, because there is not a number n which added to its sum of digits gives 4385909820.

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, 113209 + ... + 146928.

It is an arithmetic number, because the mean of its divisors is an integer number (256756206).

Almost surely, 2^4385909820 is an apocalyptic number.

It is an amenable number.

4385909820 is an abundant number, since it is smaller than the sum of its proper divisors (7938388068).

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

4385909820 is a wasteful number, since it uses less digits than its factorization.

4385909820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260430 (or 260428 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 48.

The square root of 4385909820 is about 66226.2019143481. The cubic root of 4385909820 is about 1636.8915216462.

The spelling of 4385909820 in words is "four billion, three hundred eighty-five million, nine hundred nine thousand, eight hundred twenty".