4091481 has 6 divisors (see below), whose sum is σ = 5909930. Its totient is φ = 2727648.

The previous prime is 4091471. The next prime is 4091537. The reversal of 4091481 is 1841904.

It can be written as a sum of positive squares in only one way, i.e., 4064256 + 27225 = 2016^2 + 165^2 .

It is not a de Polignac number, because 4091481 - 2⁹ = 4090969 is a prime.

It is a super-2 number, since 2×4091481² = 33480433546722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4091471) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 227296 + ... + 227313.

Almost surely, 2^4091481 is an apocalyptic number.

It is an amenable number.

4091481 is a deficient number, since it is larger than the sum of its proper divisors (1818449).

4091481 is a wasteful number, since it uses less digits than its factorization.

4091481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454615 (or 454612 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 4091481 is about 2022.7409621600. The cubic root of 4091481 is about 159.9411372016.

The spelling of 4091481 in words is "four million, ninety-one thousand, four hundred eighty-one".