2689597441 has 4 divisors (see below), whose sum is σ = 2696808532. Its totient is φ = 2682386352.

The previous prime is 2689597433. The next prime is 2689597511. The reversal of 2689597441 is 1447959862.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1447959862 = 2 ⋅723979931.

It can be written as a sum of positive squares in 2 ways, for example, as 470716416 + 2218881025 = 21696^2 + 47105^2 .

It is a cyclic number.

It is not a de Polignac number, because 2689597441 - 2³ = 2689597433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2689591441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3604986 + ... + 3605731.

It is an arithmetic number, because the mean of its divisors is an integer number (674202133).

It is a Proth number, since it is equal to 2565 ⋅ 2²⁰ + 1 and 2565 < 2²⁰.

Almost surely, 2^2689597441 is an apocalyptic number.

It is an amenable number.

2689597441 is a deficient number, since it is larger than the sum of its proper divisors (7211091).

2689597441 is an equidigital number, since it uses as much as digits as its factorization.

2689597441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7211090.

The product of its digits is 4354560, while the sum is 55.

The square root of 2689597441 is about 51861.3289552051. The cubic root of 2689597441 is about 1390.6860373132.

The spelling of 2689597441 in words is "two billion, six hundred eighty-nine million, five hundred ninety-seven thousand, four hundred forty-one".