4081493 has 4 divisors (see below), whose sum is σ = 4395468. Its totient is φ = 3767520.

The previous prime is 4081487. The next prime is 4081501. The reversal of 4081493 is 3941804.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2696164 + 1385329 = 1642^2 + 1177^2 .

It is a cyclic number.

It is not a de Polignac number, because 4081493 - 2¹⁰ = 4080469 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 (4081423) 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 3 ways as a sum of consecutive naturals, for example, 156968 + ... + 156993.

It is an arithmetic number, because the mean of its divisors is an integer number (1098867).

Almost surely, 2^4081493 is an apocalyptic number.

It is an amenable number.

4081493 is a deficient number, since it is larger than the sum of its proper divisors (313975).

4081493 is a wasteful number, since it uses less digits than its factorization.

4081493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313974.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 4081493 is about 2020.2705264395. The cubic root of 4081493 is about 159.8108833269.

The spelling of 4081493 in words is "four million, eighty-one thousand, four hundred ninety-three".