4986391 has 4 divisors (see below), whose sum is σ = 5046552. Its totient is φ = 4926232.

The previous prime is 4986383. The next prime is 4986407. The reversal of 4986391 is 1936894.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4986391 - 2³ = 4986383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4986361) 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, 29956 + ... + 30121.

It is an arithmetic number, because the mean of its divisors is an integer number (1261638).

Almost surely, 2^4986391 is an apocalyptic number.

4986391 is a deficient number, since it is larger than the sum of its proper divisors (60161).

4986391 is an equidigital number, since it uses as much as digits as its factorization.

4986391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60160.

The product of its digits is 46656, while the sum is 40.

The square root of 4986391 is about 2233.0228391129. The cubic root of 4986391 is about 170.8423132830.

It can be divided in two parts, 498 and 6391, that added together give a square (6889 = 83²).

The spelling of 4986391 in words is "four million, nine hundred eighty-six thousand, three hundred ninety-one".