4889581 has 4 divisors (see below), whose sum is σ = 4895100. Its totient is φ = 4884064.

The previous prime is 4889567. The next prime is 4889609. The reversal of 4889581 is 1859884.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 198025 + 4691556 = 445^2 + 2166^2 .

It is a cyclic number.

It is not a de Polignac number, because 4889581 - 2⁷ = 4889453 is a prime.

It is a super-2 number, since 2×4889581² = 47816004711122, 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 (4889561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1096 + ... + 3313.

It is an arithmetic number, because the mean of its divisors is an integer number (1223775).

Almost surely, 2^4889581 is an apocalyptic number.

It is an amenable number.

4889581 is a deficient number, since it is larger than the sum of its proper divisors (5519).

4889581 is a wasteful number, since it uses less digits than its factorization.

4889581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5518.

The product of its digits is 92160, while the sum is 43.

The square root of 4889581 is about 2211.2396975452. The cubic root of 4889581 is about 169.7294543296.

The spelling of 4889581 in words is "four million, eight hundred eighty-nine thousand, five hundred eighty-one".