4889391 has 16 divisors (see below), whose sum is σ = 7061376. Its totient is φ = 2991456.

The previous prime is 4889383. The next prime is 4889399. The reversal of 4889391 is 1939884.

4889391 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (4889383) and next prime (4889399).

It is not a de Polignac number, because 4889391 - 2³ = 4889383 is a prime.

It is a super-2 number, since 2×4889391² = 47812288701762, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4889399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10816 + ... + 11258.

It is an arithmetic number, because the mean of its divisors is an integer number (441336).

Almost surely, 2^4889391 is an apocalyptic number.

4889391 is a deficient number, since it is larger than the sum of its proper divisors (2171985).

4889391 is a wasteful number, since it uses less digits than its factorization.

4889391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742.

The product of its digits is 62208, while the sum is 42.

The square root of 4889391 is about 2211.1967348022. The cubic root of 4889391 is about 169.7272558444.

It can be divided in two parts, 48893 and 91, that added together give a palindrome (48984).

The spelling of 4889391 in words is "four million, eight hundred eighty-nine thousand, three hundred ninety-one".