2939640585 has 24 divisors (see below), whose sum is σ = 5471332416. Its totient is φ = 1343835360.

The previous prime is 2939640563. The next prime is 2939640589. The reversal of 2939640585 is 5850469392.

It is not a de Polignac number, because 2939640585 - 2¹⁰ = 2939639561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2939640589) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1999021 + ... + 2000490.

It is an arithmetic number, because the mean of its divisors is an integer number (227972184).

Almost surely, 2^2939640585 is an apocalyptic number.

It is an amenable number.

2939640585 is a deficient number, since it is larger than the sum of its proper divisors (2531691831).

2939640585 is a wasteful number, since it uses less digits than its factorization.

2939640585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3999533 (or 3999526 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 51.

The square root of 2939640585 is about 54218.4524401057. The cubic root of 2939640585 is about 1432.5113717349.

The spelling of 2939640585 in words is "two billion, nine hundred thirty-nine million, six hundred forty thousand, five hundred eighty-five".