2239998 has 16 divisors (see below), whose sum is σ = 4624896. Its totient is φ = 722520.

The previous prime is 2239997. The next prime is 2240003. The reversal of 2239998 is 8999322.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2¹¹ + 2¹⁹ + 3¹³ + 9³ + 9⁵ + 9⁵ + 8³ .

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5836 + ... + 6207.

It is an arithmetic number, because the mean of its divisors is an integer number (289056).

2^2239998 is an apocalyptic number.

2239998 is an abundant number, since it is smaller than the sum of its proper divisors (2384898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2239998 is a wasteful number, since it uses less digits than its factorization.

2239998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12079.

The product of its digits is 69984, while the sum is 42.

The square root of 2239998 is about 1496.6622865563. The cubic root of 2239998 is about 130.8426134663.

The spelling of 2239998 in words is "two million, two hundred thirty-nine thousand, nine hundred ninety-eight".