40826609 has 2 divisors, whose sum is σ = 40826610. Its totient is φ = 40826608.

The previous prime is 40826603. The next prime is 40826677. The reversal of 40826609 is 90662804.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25200400 + 15626209 = 5020^2 + 3953^2 .

It is a cyclic number.

It is not a de Polignac number, because 40826609 - 2⁴ = 40826593 is a prime.

It is not a weakly prime, because it can be changed into another prime (40826603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20413304 + 20413305.

It is an arithmetic number, because the mean of its divisors is an integer number (20413305).

Almost surely, 2^40826609 is an apocalyptic number.

It is an amenable number.

40826609 is a deficient number, since it is larger than the sum of its proper divisors (1).

40826609 is an equidigital number, since it uses as much as digits as its factorization.

40826609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 40826609 is about 6389.5703298422. The cubic root of 40826609 is about 344.3349478948.

The spelling of 40826609 in words is "forty million, eight hundred twenty-six thousand, six hundred nine".