2140798639 has 4 divisors (see below), whose sum is σ = 2446627024. Its totient is φ = 1834970256.

The previous prime is 2140798607. The next prime is 2140798663. The reversal of 2140798639 is 9368970412.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2140798639 - 2⁵ = 2140798607 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2140798592 and 2140798601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2140798679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152914182 + ... + 152914195.

It is an arithmetic number, because the mean of its divisors is an integer number (611656756).

Almost surely, 2^2140798639 is an apocalyptic number.

2140798639 is a deficient number, since it is larger than the sum of its proper divisors (305828385).

2140798639 is an equidigital number, since it uses as much as digits as its factorization.

2140798639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305828384.

The product of its (nonzero) digits is 653184, while the sum is 49.

The square root of 2140798639 is about 46268.7652634042. The cubic root of 2140798639 is about 1288.8190299453.

The spelling of 2140798639 in words is "two billion, one hundred forty million, seven hundred ninety-eight thousand, six hundred thirty-nine".