40088869 has 2 divisors, whose sum is σ = 40088870. Its totient is φ = 40088868.

The previous prime is 40088863. The next prime is 40088887. The reversal of 40088869 is 96888004.

40088869 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39526369 + 562500 = 6287^2 + 750^2 .

It is a cyclic number.

It is not a de Polignac number, because 40088869 - 2⁵ = 40088837 is a prime.

It is a super-2 number, since 2×40088869² = 3214234835398322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40088863) 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, 20044434 + 20044435.

It is an arithmetic number, because the mean of its divisors is an integer number (20044435).

Almost surely, 2^40088869 is an apocalyptic number.

It is an amenable number.

40088869 is a deficient number, since it is larger than the sum of its proper divisors (1).

40088869 is an equidigital number, since it uses as much as digits as its factorization.

40088869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 110592, while the sum is 43.

The square root of 40088869 is about 6331.5771337006. The cubic root of 40088869 is about 342.2482750861.

The spelling of 40088869 in words is "forty million, eighty-eight thousand, eight hundred sixty-nine".