2388861 has 12 divisors (see below), whose sum is σ = 3464188. Its totient is φ = 1586304.

The previous prime is 2388839. The next prime is 2388863. The reversal of 2388861 is 1688832.

It can be written as a sum of positive squares in 2 ways, for example, as 93636 + 2295225 = 306^2 + 1515^2 .

It is not a de Polignac number, because 2388861 - 2⁶ = 2388797 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2388863) 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 11 ways as a sum of consecutive naturals, for example, 3591 + ... + 4203.

2^2388861 is an apocalyptic number.

It is an amenable number.

2388861 is a deficient number, since it is larger than the sum of its proper divisors (1075327).

2388861 is a wasteful number, since it uses less digits than its factorization.

2388861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1052 (or 1049 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 2388861 is about 1545.5940605476. The cubic root of 2388861 is about 133.6791350225.

It can be divided in two parts, 2388 and 861, that added together give a square (3249 = 57²).

The spelling of 2388861 in words is "two million, three hundred eighty-eight thousand, eight hundred sixty-one".