2689243407 has 12 divisors (see below), whose sum is σ = 3895661640. Its totient is φ = 1787660208.

The previous prime is 2689243369. The next prime is 2689243411. The reversal of 2689243407 is 7043429862.

It is a de Polignac number, because none of the positive numbers 2^k-2689243407 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2689243507) 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 11 ways as a sum of consecutive naturals, for example, 427432 + ... + 433677.

It is an arithmetic number, because the mean of its divisors is an integer number (324638470).

Almost surely, 2^2689243407 is an apocalyptic number.

2689243407 is a deficient number, since it is larger than the sum of its proper divisors (1206418233).

2689243407 is a wasteful number, since it uses less digits than its factorization.

2689243407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861462 (or 861459 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The square root of 2689243407 is about 51857.9155674425. The cubic root of 2689243407 is about 1390.6250155735.

The spelling of 2689243407 in words is "two billion, six hundred eighty-nine million, two hundred forty-three thousand, four hundred seven".