2190439 has 2 divisors, whose sum is σ = 2190440. Its totient is φ = 2190438.

The previous prime is 2190427. The next prime is 2190469. The reversal of 2190439 is 9340912.

It is a happy number.

2190439 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2190439 - 2⁵ = 2190407 is a prime.

It is a plaindrome in base 11.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2190469) 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 as a sum of consecutive naturals, namely, 1095219 + 1095220.

It is an arithmetic number, because the mean of its divisors is an integer number (1095220).

2^2190439 is an apocalyptic number.

2190439 is a deficient number, since it is larger than the sum of its proper divisors (1).

2190439 is an equidigital number, since it uses as much as digits as its factorization.

2190439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 2190439 is about 1480.0131756170. The cubic root of 2190439 is about 129.8704626826.

The spelling of 2190439 in words is "two million, one hundred ninety thousand, four hundred thirty-nine".