2389999 has 4 divisors (see below), whose sum is σ = 2493936. Its totient is φ = 2286064.

The previous prime is 2389993. The next prime is 2390009. The reversal of 2389999 is 9999832.

2389999 is an esthetic number in base 15, because in such base its adjacent digits differ by 1.

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 2389999 - 2⁵ = 2389967 is a prime.

It is an Ulam number.

2389999 is a modest number, since divided by 9999 gives 238 as remainder.

It is a plaindrome in base 10 and base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2389993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51934 + ... + 51979.

It is an arithmetic number, because the mean of its divisors is an integer number (623484).

2^2389999 is an apocalyptic number.

2389999 is a deficient number, since it is larger than the sum of its proper divisors (103937).

2389999 is a wasteful number, since it uses less digits than its factorization.

2389999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103936.

The product of its digits is 314928, while the sum is 49.

The square root of 2389999 is about 1545.9621599509. The cubic root of 2389999 is about 133.7003589036.

The spelling of 2389999 in words is "two million, three hundred eighty-nine thousand, nine hundred ninety-nine".