2864091 has 4 divisors (see below), whose sum is σ = 3818792. Its totient is φ = 1909392.

The previous prime is 2864089. The next prime is 2864093. The reversal of 2864091 is 1904682.

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

It is an interprime number because it is at equal distance from previous prime (2864089) and next prime (2864093).

It is not a de Polignac number, because 2864091 - 2¹ = 2864089 is a prime.

It is a D-number.

It is a Duffinian number.

2864091 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2864093) 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, 477346 + ... + 477351.

It is an arithmetic number, because the mean of its divisors is an integer number (954698).

2^2864091 is an apocalyptic number.

2864091 is a deficient number, since it is larger than the sum of its proper divisors (954701).

2864091 is an equidigital number, since it uses as much as digits as its factorization.

2864091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 954700.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 2864091 is about 1692.3625498102. The cubic root of 2864091 is about 142.0132732418.

The spelling of 2864091 in words is "two million, eight hundred sixty-four thousand, ninety-one".