4089791 has 8 divisors (see below), whose sum is σ = 4372704. Its totient is φ = 3815680.

The previous prime is 4089779. The next prime is 4089823. The reversal of 4089791 is 1979804.

4089791 = T₄₂₆ + T₄₂₇ + ... + T₄₆₆.

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 4089791 - 2¹⁰ = 4088767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4089191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1226 + ... + 3111.

It is an arithmetic number, because the mean of its divisors is an integer number (546588).

Almost surely, 2^4089791 is an apocalyptic number.

4089791 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

4089791 is a deficient number, since it is larger than the sum of its proper divisors (282913).

4089791 is a wasteful number, since it uses less digits than its factorization.

4089791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4401.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 4089791 is about 2022.3231690311. The cubic root of 4089791 is about 159.9191127606.

The spelling of 4089791 in words is "four million, eighty-nine thousand, seven hundred ninety-one".