4491393 has 16 divisors (see below), whose sum is σ = 6300096. Its totient is φ = 2842560.

The previous prime is 4491359. The next prime is 4491401. The reversal of 4491393 is 3931944.

It is not a de Polignac number, because 4491393 - 2⁶ = 4491329 is a prime.

It is a super-2 number, since 2×4491393² = 40345222160898, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4491313) 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, 4303 + ... + 5243.

It is an arithmetic number, because the mean of its divisors is an integer number (393756).

Almost surely, 2^4491393 is an apocalyptic number.

4491393 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

It is an amenable number.

4491393 is a deficient number, since it is larger than the sum of its proper divisors (1808703).

4491393 is a wasteful number, since it uses less digits than its factorization.

4491393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1024.

The product of its digits is 11664, while the sum is 33.

The square root of 4491393 is about 2119.2906832240. The cubic root of 4491393 is about 164.9910371624.

It can be divided in two parts, 4491 and 393, that added together give a palindrome (4884).

The spelling of 4491393 in words is "four million, four hundred ninety-one thousand, three hundred ninety-three".