2040679509 has 32 divisors (see below), whose sum is σ = 3044557824. Its totient is φ = 1205124480.

The previous prime is 2040679481. The next prime is 2040679519. The reversal of 2040679509 is 9059760402.

It is not a de Polignac number, because 2040679509 - 2²⁰ = 2039630933 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2040679519) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 689577 + ... + 692529.

It is an arithmetic number, because the mean of its divisors is an integer number (95142432).

Almost surely, 2^2040679509 is an apocalyptic number.

It is an amenable number.

2040679509 is a deficient number, since it is larger than the sum of its proper divisors (1003878315).

2040679509 is a wasteful number, since it uses less digits than its factorization.

2040679509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3497.

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 2040679509 is about 45173.8808273099. The cubic root of 2040679509 is about 1268.4059420426.

The spelling of 2040679509 in words is "two billion, forty million, six hundred seventy-nine thousand, five hundred nine".