4893781 has 4 divisors (see below), whose sum is σ = 4997952. Its totient is φ = 4789612.

The previous prime is 4893761. The next prime is 4893809. The reversal of 4893781 is 1873984.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4893781 - 2¹⁵ = 4861013 is a prime.

It is a super-2 number, since 2×4893781² = 47898184951922, which contains 22 as substring.

It is a Duffinian number.

4893781 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4893751) 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, 52015 + ... + 52108.

It is an arithmetic number, because the mean of its divisors is an integer number (1249488).

Almost surely, 2^4893781 is an apocalyptic number.

It is an amenable number.

4893781 is a deficient number, since it is larger than the sum of its proper divisors (104171).

4893781 is a wasteful number, since it uses less digits than its factorization.

4893781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104170.

The product of its digits is 48384, while the sum is 40.

The square root of 4893781 is about 2212.1891872080. The cubic root of 4893781 is about 169.7780378855.

The spelling of 4893781 in words is "four million, eight hundred ninety-three thousand, seven hundred eighty-one".