4140491 has 4 divisors (see below), whose sum is σ = 4147800. Its totient is φ = 4133184.

The previous prime is 4140481. The next prime is 4140511. The reversal of 4140491 is 1940414.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4140491 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4140421) 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, 2726 + ... + 3963.

It is an arithmetic number, because the mean of its divisors is an integer number (1036950).

Almost surely, 2^4140491 is an apocalyptic number.

4140491 is a deficient number, since it is larger than the sum of its proper divisors (7309).

4140491 is an equidigital number, since it uses as much as digits as its factorization.

4140491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7308.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 4140491 is about 2034.8196480278. The cubic root of 4140491 is about 160.5772249625.

The spelling of 4140491 in words is "four million, one hundred forty thousand, four hundred ninety-one".