2140779 has 8 divisors (see below), whose sum is σ = 2866752. Its totient is φ = 1421000.

The previous prime is 2140769. The next prime is 2140781. The reversal of 2140779 is 9770412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2140779 - 2⁴ = 2140763 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2140729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 669 + ... + 2174.

It is an arithmetic number, because the mean of its divisors is an integer number (358344).

2^2140779 is an apocalyptic number.

2140779 is a deficient number, since it is larger than the sum of its proper divisors (725973).

2140779 is a wasteful number, since it uses less digits than its factorization.

2140779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3097.

The product of its (nonzero) digits is 3528, while the sum is 30.

The square root of 2140779 is about 1463.1401163252. The cubic root of 2140779 is about 128.8815088862.

The spelling of 2140779 in words is "two million, one hundred forty thousand, seven hundred seventy-nine".