2686440959 has 2 divisors, whose sum is σ = 2686440960. Its totient is φ = 2686440958.

The previous prime is 2686440947. The next prime is 2686440961. The reversal of 2686440959 is 9590446862.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2686440959 - 2⁴ = 2686440943 is a prime.

It is a Sophie Germain prime.

Together with 2686440961, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2686440959.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2686410959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1343220479 + 1343220480.

It is an arithmetic number, because the mean of its divisors is an integer number (1343220480).

Almost surely, 2^2686440959 is an apocalyptic number.

2686440959 is a deficient number, since it is larger than the sum of its proper divisors (1).

2686440959 is an equidigital number, since it uses as much as digits as its factorization.

2686440959 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3732480, while the sum is 53.

The square root of 2686440959 is about 51830.8880784422. Note that the first 3 decimals coincide. The cubic root of 2686440959 is about 1390.1417930677.

The spelling of 2686440959 in words is "two billion, six hundred eighty-six million, four hundred forty thousand, nine hundred fifty-nine".