2291329 has 4 divisors (see below), whose sum is σ = 2390976. Its totient is φ = 2191684.

The previous prime is 2291327. The next prime is 2291347. The reversal of 2291329 is 9231922.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2291329 - 2¹ = 2291327 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2291297 and 2291306.

It is not an unprimeable number, because it can be changed into a prime (2291327) 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, 49789 + ... + 49834.

It is an arithmetic number, because the mean of its divisors is an integer number (597744).

2^2291329 is an apocalyptic number.

It is an amenable number.

2291329 is a deficient number, since it is larger than the sum of its proper divisors (99647).

2291329 is an equidigital number, since it uses as much as digits as its factorization.

2291329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99646.

The product of its digits is 1944, while the sum is 28.

The square root of 2291329 is about 1513.7136453108. The cubic root of 2291329 is about 131.8345225158.

The spelling of 2291329 in words is "two million, two hundred ninety-one thousand, three hundred twenty-nine".