2389867 has 4 divisors (see below), whose sum is σ = 2454496. Its totient is φ = 2325240.

The previous prime is 2389859. The next prime is 2389873. The reversal of 2389867 is 7689832.

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

It is a cyclic number.

It is not a de Polignac number, because 2389867 - 2³ = 2389859 is a prime.

It is a super-3 number, since 3×2389867³ = 40948919996783332089, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2⁸ + 3¹³ + 8² + 9⁶ + 8⁶ + 6⁴ + 7³ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2389847) 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 3 ways as a sum of consecutive naturals, for example, 32259 + ... + 32332.

It is an arithmetic number, because the mean of its divisors is an integer number (613624).

2^2389867 is an apocalyptic number.

2389867 is a deficient number, since it is larger than the sum of its proper divisors (64629).

2389867 is an equidigital number, since it uses as much as digits as its factorization.

2389867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64628.

The product of its digits is 145152, while the sum is 43.

The square root of 2389867 is about 1545.9194675015. The cubic root of 2389867 is about 133.6978974280.

The spelling of 2389867 in words is "two million, three hundred eighty-nine thousand, eight hundred sixty-seven".