2291689229 has 4 divisors (see below), whose sum is σ = 2365614720. Its totient is φ = 2217763740.

The previous prime is 2291689217. The next prime is 2291689271. The reversal of 2291689229 is 9229861922.

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 a de Polignac number, because none of the positive numbers 2^k-2291689229 is a prime.

It is a super-2 number, since 2×2291689229² = 10503679044629228882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2291689129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36962699 + ... + 36962760.

It is an arithmetic number, because the mean of its divisors is an integer number (591403680).

Almost surely, 2^2291689229 is an apocalyptic number.

It is an amenable number.

2291689229 is a deficient number, since it is larger than the sum of its proper divisors (73925491).

2291689229 is an equidigital number, since it uses as much as digits as its factorization.

2291689229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73925490.

The product of its digits is 559872, while the sum is 50.

The square root of 2291689229 is about 47871.5910431229. The cubic root of 2291689229 is about 1318.4143089799.

The spelling of 2291689229 in words is "two billion, two hundred ninety-one million, six hundred eighty-nine thousand, two hundred twenty-nine".