2239973 has 4 divisors (see below), whose sum is σ = 2287680. Its totient is φ = 2192268.

The previous prime is 2239961. The next prime is 2239987. The reversal of 2239973 is 3799322.

2239973 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3799322 = 2 ⋅1899661.

It is not a de Polignac number, because 2239973 - 2⁴ = 2239957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2239933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23783 + ... + 23876.

It is an arithmetic number, because the mean of its divisors is an integer number (571920).

2^2239973 is an apocalyptic number.

It is an amenable number.

2239973 is a deficient number, since it is larger than the sum of its proper divisors (47707).

2239973 is an equidigital number, since it uses as much as digits as its factorization.

2239973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47706.

The product of its digits is 20412, while the sum is 35.

The square root of 2239973 is about 1496.6539346155. The cubic root of 2239973 is about 130.8421266983.

The spelling of 2239973 in words is "two million, two hundred thirty-nine thousand, nine hundred seventy-three".