2140849 has 2 divisors, whose sum is σ = 2140850. Its totient is φ = 2140848.

The previous prime is 2140847. The next prime is 2140877. The reversal of 2140849 is 9480412.

It is an a-pointer prime, because the next prime (2140877) can be obtained adding 2140849 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2030625 + 110224 = 1425^2 + 332^2 .

It is a cyclic number.

It is not a de Polignac number, because 2140849 - 2¹ = 2140847 is a prime.

Together with 2140847, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2140843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1070424 + 1070425.

It is an arithmetic number, because the mean of its divisors is an integer number (1070425).

2^2140849 is an apocalyptic number.

It is an amenable number.

2140849 is a deficient number, since it is larger than the sum of its proper divisors (1).

2140849 is an equidigital number, since it uses as much as digits as its factorization.

2140849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 2140849 is about 1463.1640372836. The cubic root of 2140849 is about 128.8829136097.

The spelling of 2140849 in words is "two million, one hundred forty thousand, eight hundred forty-nine".