4085391 has 8 divisors (see below), whose sum is σ = 5460480. Its totient is φ = 2716952.

The previous prime is 4085383. The next prime is 4085401. The reversal of 4085391 is 1935804.

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 4085391 - 2³ = 4085383 is a prime.

4085391 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4085311) 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, 16 + ... + 2858.

It is an arithmetic number, because the mean of its divisors is an integer number (682560).

Almost surely, 2^4085391 is an apocalyptic number.

4085391 is a deficient number, since it is larger than the sum of its proper divisors (1375089).

4085391 is a wasteful number, since it uses less digits than its factorization.

4085391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3325.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 4085391 is about 2021.2350184974. The cubic root of 4085391 is about 159.8617425441.

The spelling of 4085391 in words is "four million, eighty-five thousand, three hundred ninety-one".