4090689 has 8 divisors (see below), whose sum is σ = 6060320. Its totient is φ = 2727108.

The previous prime is 4090679. The next prime is 4090703. The reversal of 4090689 is 9860904.

It is not a de Polignac number, because 4090689 - 2⁴ = 4090673 is a prime.

It is a Duffinian number.

It is a Curzon number.

4090689 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4090649) 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, 75727 + ... + 75780.

It is an arithmetic number, because the mean of its divisors is an integer number (757540).

Almost surely, 2^4090689 is an apocalyptic number.

It is an amenable number.

4090689 is a deficient number, since it is larger than the sum of its proper divisors (1969631).

4090689 is a wasteful number, since it uses less digits than its factorization.

4090689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151516 (or 151510 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 4090689 is about 2022.5451787290. The cubic root of 4090689 is about 159.9308164437.

The spelling of 4090689 in words is "four million, ninety thousand, six hundred eighty-nine".