2389869 has 6 divisors (see below), whose sum is σ = 3452046. Its totient is φ = 1593240.

The previous prime is 2389859. The next prime is 2389873. The reversal of 2389869 is 9689832.

It can be written as a sum of positive squares in only one way, i.e., 2064969 + 324900 = 1437^2 + 570^2 .

It is not a de Polignac number, because 2389869 - 2⁴ = 2389853 is a prime.

It is a super-2 number, since 2×2389869² = 11422947674322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2389859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 132762 + ... + 132779.

It is an arithmetic number, because the mean of its divisors is an integer number (575341).

2^2389869 is an apocalyptic number.

It is an amenable number.

2389869 is a deficient number, since it is larger than the sum of its proper divisors (1062177).

2389869 is a wasteful number, since it uses less digits than its factorization.

2389869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265547 (or 265544 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 2389869 is about 1545.9201143656. The cubic root of 2389869 is about 133.6979347238.

The spelling of 2389869 in words is "two million, three hundred eighty-nine thousand, eight hundred sixty-nine".