2190047 has 2 divisors, whose sum is σ = 2190048. Its totient is φ = 2190046.

The previous prime is 2190043. The next prime is 2190077. The reversal of 2190047 is 7400912.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2190047 - 2² = 2190043 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2190043) 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 as a sum of consecutive naturals, namely, 1095023 + 1095024.

It is an arithmetic number, because the mean of its divisors is an integer number (1095024).

2^2190047 is an apocalyptic number.

2190047 is a deficient number, since it is larger than the sum of its proper divisors (1).

2190047 is an equidigital number, since it uses as much as digits as its factorization.

2190047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 2190047 is about 1479.8807384381. The cubic root of 2190047 is about 129.8627150334.

Adding to 2190047 its reverse (7400912), we get a palindrome (9590959).

The spelling of 2190047 in words is "two million, one hundred ninety thousand, forty-seven".