2239999 has 8 divisors (see below), whose sum is σ = 2317392. Its totient is φ = 2163840.

The previous prime is 2239997. The next prime is 2240003. The reversal of 2239999 is 9999322.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2239999 - 2¹ = 2239997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

2239999 is a modest number, since divided by 9999 gives 223 as remainder.

2239999 is a lucky number.

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 (2239997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4629 + ... + 5089.

It is an arithmetic number, because the mean of its divisors is an integer number (289674).

2^2239999 is an apocalyptic number.

2239999 is a deficient number, since it is larger than the sum of its proper divisors (77393).

2239999 is a wasteful number, since it uses less digits than its factorization.

2239999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617.

The product of its digits is 78732, while the sum is 43.

The square root of 2239999 is about 1496.6626206330. The cubic root of 2239999 is about 130.8426329369.

It can be divided in two parts, 22 and 39999, that multiplied together give a palindrome (879978).

The spelling of 2239999 in words is "two million, two hundred thirty-nine thousand, nine hundred ninety-nine".