2491469459 has 4 divisors (see below), whose sum is σ = 2638026504. Its totient is φ = 2344912416.

The previous prime is 2491469417. The next prime is 2491469467. The reversal of 2491469459 is 9549641942.

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

It is a cyclic number.

It is not a de Polignac number, because 2491469459 - 2⁸ = 2491469203 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2491469459.

It is not an unprimeable number, because it can be changed into a prime (2491469479) 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, 73278497 + ... + 73278530.

It is an arithmetic number, because the mean of its divisors is an integer number (659506626).

Almost surely, 2^2491469459 is an apocalyptic number.

2491469459 is a deficient number, since it is larger than the sum of its proper divisors (146557045).

2491469459 is a wasteful number, since it uses less digits than its factorization.

2491469459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146557044.

The product of its digits is 2799360, while the sum is 53.

The square root of 2491469459 is about 49914.6216954511. The cubic root of 2491469459 is about 1355.6633524344.

The spelling of 2491469459 in words is "two billion, four hundred ninety-one million, four hundred sixty-nine thousand, four hundred fifty-nine".