2040749 has 2 divisors, whose sum is σ = 2040750. Its totient is φ = 2040748.

The previous prime is 2040743. The next prime is 2040769. The reversal of 2040749 is 9470402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1525225 + 515524 = 1235^2 + 718^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2040749 is a prime.

It is a Chen prime.

It is equal to p₁₅₁₇₆₆ and since 2040749 and 151766 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2040743) 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, 1020374 + 1020375.

It is an arithmetic number, because the mean of its divisors is an integer number (1020375).

2^2040749 is an apocalyptic number.

It is an amenable number.

2040749 is a deficient number, since it is larger than the sum of its proper divisors (1).

2040749 is an equidigital number, since it uses as much as digits as its factorization.

2040749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 2040749 is about 1428.5478640914. The cubic root of 2040749 is about 126.8420339501.

The spelling of 2040749 in words is "two million, forty thousand, seven hundred forty-nine".