2689940487 has 16 divisors (see below), whose sum is σ = 3864986720. Its totient is φ = 1654273152.

The previous prime is 2689940483. The next prime is 2689940489. The reversal of 2689940487 is 7840499862.

It is not a de Polignac number, because 2689940487 - 2² = 2689940483 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2689940483) 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 15 ways as a sum of consecutive naturals, for example, 40689 + ... + 83877.

It is an arithmetic number, because the mean of its divisors is an integer number (241561670).

Almost surely, 2^2689940487 is an apocalyptic number.

2689940487 is a deficient number, since it is larger than the sum of its proper divisors (1175046233).

2689940487 is a wasteful number, since it uses less digits than its factorization.

2689940487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44802.

The product of its (nonzero) digits is 6967296, while the sum is 57.

The square root of 2689940487 is about 51864.6361888329. The cubic root of 2689940487 is about 1390.7451600396.

The spelling of 2689940487 in words is "two billion, six hundred eighty-nine million, nine hundred forty thousand, four hundred eighty-seven".