40888669 has 2 divisors, whose sum is σ = 40888670. Its totient is φ = 40888668.

The previous prime is 40888667. The next prime is 40888681. The reversal of 40888669 is 96688804.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23765625 + 17123044 = 4875^2 + 4138^2 .

It is a cyclic number.

It is not a de Polignac number, because 40888669 - 2¹ = 40888667 is a prime.

It is a super-2 number, since 2×40888669² = 3343766505183122, which contains 22 as substring.

Together with 40888667, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40888667) 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, 20444334 + 20444335.

It is an arithmetic number, because the mean of its divisors is an integer number (20444335).

Almost surely, 2^40888669 is an apocalyptic number.

It is an amenable number.

40888669 is a deficient number, since it is larger than the sum of its proper divisors (1).

40888669 is an equidigital number, since it uses as much as digits as its factorization.

40888669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 663552, while the sum is 49.

The square root of 40888669 is about 6394.4248373095. The cubic root of 40888669 is about 344.5093325974.

The spelling of 40888669 in words is "forty million, eight hundred eighty-eight thousand, six hundred sixty-nine".