2389779 has 18 divisors (see below), whose sum is σ = 4016220. Its totient is φ = 1365336.

The previous prime is 2389757. The next prime is 2389781. The reversal of 2389779 is 9779832.

2389779 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2389779 - 2⁵ = 2389747 is a prime.

It is a super-2 number, since 2×2389779² = 11422087337682, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2389729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2269 + ... + 3150.

2^2389779 is an apocalyptic number.

2389779 is a deficient number, since it is larger than the sum of its proper divisors (1626441).

2389779 is a wasteful number, since it uses less digits than its factorization.

2389779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5439 (or 5429 counting only the distinct ones).

The product of its digits is 190512, while the sum is 45.

The square root of 2389779 is about 1545.8910052135. The cubic root of 2389779 is about 133.6962563940.

The spelling of 2389779 in words is "two million, three hundred eighty-nine thousand, seven hundred seventy-nine".