4090287 has 4 divisors (see below), whose sum is σ = 5453720. Its totient is φ = 2726856.

The previous prime is 4090279. The next prime is 4090309. The reversal of 4090287 is 7820904.

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

It is not a de Polignac number, because 4090287 - 2³ = 4090279 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4090237) 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, 681712 + ... + 681717.

It is an arithmetic number, because the mean of its divisors is an integer number (1363430).

Almost surely, 2^4090287 is an apocalyptic number.

4090287 is a deficient number, since it is larger than the sum of its proper divisors (1363433).

4090287 is a wasteful number, since it uses less digits than its factorization.

4090287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1363432.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 4090287 is about 2022.4457965543. The cubic root of 4090287 is about 159.9255773675.

The spelling of 4090287 in words is "four million, ninety thousand, two hundred eighty-seven".