4781869 has 4 divisors (see below), whose sum is σ = 4787100. Its totient is φ = 4776640.

The previous prime is 4781867. The next prime is 4781873. The reversal of 4781869 is 9681874.

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 2924100 + 1857769 = 1710^2 + 1363^2 .

It is a cyclic number.

It is not a de Polignac number, because 4781869 - 2¹ = 4781867 is a prime.

It is a super-2 number, since 2×4781869² = 45732542266322, 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 (4781867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 844 + ... + 3205.

It is an arithmetic number, because the mean of its divisors is an integer number (1196775).

Almost surely, 2^4781869 is an apocalyptic number.

It is an amenable number.

4781869 is a deficient number, since it is larger than the sum of its proper divisors (5231).

4781869 is a wasteful number, since it uses less digits than its factorization.

4781869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5230.

The product of its digits is 96768, while the sum is 43.

The square root of 4781869 is about 2186.7484994850. The cubic root of 4781869 is about 168.4738723294.

The spelling of 4781869 in words is "four million, seven hundred eighty-one thousand, eight hundred sixty-nine".