4889781 has 16 divisors (see below), whose sum is σ = 7801920. Its totient is φ = 3008880.

The previous prime is 4889771. The next prime is 4889789. The reversal of 4889781 is 1879884.

4889781 is a `hidden beast` number, since 488 + 97 + 81 = 666.

It is not a de Polignac number, because 4889781 - 2¹⁴ = 4873397 is a prime.

It is a super-2 number, since 2×4889781² = 47819916455922, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4889789) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6615 + ... + 7316.

It is an arithmetic number, because the mean of its divisors is an integer number (487620).

Almost surely, 2^4889781 is an apocalyptic number.

It is an amenable number.

4889781 is a deficient number, since it is larger than the sum of its proper divisors (2912139).

4889781 is a wasteful number, since it uses less digits than its factorization.

4889781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13953 (or 13947 counting only the distinct ones).

The product of its digits is 129024, while the sum is 45.

The square root of 4889781 is about 2211.2849205835. The cubic root of 4889781 is about 169.7317684630.

The spelling of 4889781 in words is "four million, eight hundred eighty-nine thousand, seven hundred eighty-one".