4809881 has 2 divisors, whose sum is σ = 4809882. Its totient is φ = 4809880.

The previous prime is 4809859. The next prime is 4809901. The reversal of 4809881 is 1889084.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2835856 + 1974025 = 1684^2 + 1405^2 .

It is a cyclic number.

It is not a de Polignac number, because 4809881 - 2¹⁰ = 4808857 is a prime.

It is a super-3 number, since 3×4809881³ (a number of 21 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4809811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2404940 + 2404941.

It is an arithmetic number, because the mean of its divisors is an integer number (2404941).

Almost surely, 2^4809881 is an apocalyptic number.

It is an amenable number.

4809881 is a deficient number, since it is larger than the sum of its proper divisors (1).

4809881 is an equidigital number, since it uses as much as digits as its factorization.

4809881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 38.

The square root of 4809881 is about 2193.1440901136. The cubic root of 4809881 is about 168.8022031450.

The spelling of 4809881 in words is "four million, eight hundred nine thousand, eight hundred eighty-one".