4085491 has 8 divisors (see below), whose sum is σ = 4475520. Its totient is φ = 3712128.

The previous prime is 4085489. The next prime is 4085507. The reversal of 4085491 is 1945804.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4085491 - 2¹ = 4085489 is a prime.

It is a super-2 number, since 2×4085491² = 33382473422162, which contains 22 as substring.

It is a Duffinian number.

4085491 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4085401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3651 + ... + 4636.

It is an arithmetic number, because the mean of its divisors is an integer number (559440).

Almost surely, 2^4085491 is an apocalyptic number.

4085491 is a deficient number, since it is larger than the sum of its proper divisors (390029).

4085491 is a wasteful number, since it uses less digits than its factorization.

4085491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8333.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 4085491 is about 2021.2597556969. The cubic root of 4085491 is about 159.8630468699.

The spelling of 4085491 in words is "four million, eighty-five thousand, four hundred ninety-one".