4888781 has 4 divisors (see below), whose sum is σ = 4893564. Its totient is φ = 4884000.

The previous prime is 4888753. The next prime is 4888813. The reversal of 4888781 is 1878884.

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 1525225 + 3363556 = 1235^2 + 1834^2 .

It is a cyclic number.

It is not a de Polignac number, because 4888781 - 2¹⁸ = 4626637 is a prime.

It is a super-2 number, since 2×4888781² = 47800359331922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4888711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170 + ... + 3131.

It is an arithmetic number, because the mean of its divisors is an integer number (1223391).

Almost surely, 2^4888781 is an apocalyptic number.

It is an amenable number.

4888781 is a deficient number, since it is larger than the sum of its proper divisors (4783).

4888781 is a wasteful number, since it uses less digits than its factorization.

4888781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4782.

The product of its digits is 114688, while the sum is 44.

The square root of 4888781 is about 2211.0587961427. The cubic root of 4888781 is about 169.7201971649.

It can be divided in two parts, 488 and 8781, that multiplied together give a triangular number (4285128 = T₂₉₂₇).

The spelling of 4888781 in words is "four million, eight hundred eighty-eight thousand, seven hundred eighty-one".