4781986 has 8 divisors (see below), whose sum is σ = 7825104. Its totient is φ = 2173620.

The previous prime is 4781983. The next prime is 4781989. The reversal of 4781986 is 6891874.

It is an interprime number because it is at equal distance from previous prime (4781983) and next prime (4781989).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (4781983) 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, 108660 + ... + 108703.

It is an arithmetic number, because the mean of its divisors is an integer number (978138).

Almost surely, 2^4781986 is an apocalyptic number.

4781986 is a deficient number, since it is larger than the sum of its proper divisors (3043118).

4781986 is a wasteful number, since it uses less digits than its factorization.

4781986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217376.

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

The square root of 4781986 is about 2186.7752513690. The cubic root of 4781986 is about 168.4752463586.

The spelling of 4781986 in words is "four million, seven hundred eighty-one thousand, nine hundred eighty-six".