2291979147 has 8 divisors (see below), whose sum is σ = 3087477456. Its totient is φ = 1512233472.

The previous prime is 2291979119. The next prime is 2291979197. The reversal of 2291979147 is 7419791922.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2291979147 - 2¹⁰ = 2291978123 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2291979147.

It is not an unprimeable number, because it can be changed into a prime (2291979197) 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, 3937818 + ... + 3938399.

It is an arithmetic number, because the mean of its divisors is an integer number (385934682).

Almost surely, 2^2291979147 is an apocalyptic number.

2291979147 is a deficient number, since it is larger than the sum of its proper divisors (795498309).

2291979147 is an equidigital number, since it uses as much as digits as its factorization.

2291979147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7876317.

The product of its digits is 571536, while the sum is 51.

The square root of 2291979147 is about 47874.6190272048. The cubic root of 2291979147 is about 1318.4699034758.

The spelling of 2291979147 in words is "two billion, two hundred ninety-one million, nine hundred seventy-nine thousand, one hundred forty-seven".