40022869 has 2 divisors, whose sum is σ = 40022870. Its totient is φ = 40022868.

The previous prime is 40022861. The next prime is 40022881. The reversal of 40022869 is 96822004.

40022869 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., 25100100 + 14922769 = 5010^2 + 3863^2 .

It is a cyclic number.

It is not a de Polignac number, because 40022869 - 2³ = 40022861 is a prime.

It is a super-2 number, since 2×40022869² = 3203660085982322, which contains 22 as substring.

It is equal to p_2434963 and since 40022869 and 2434963 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40022869.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40022861) 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, 20011434 + 20011435.

It is an arithmetic number, because the mean of its divisors is an integer number (20011435).

Almost surely, 2^40022869 is an apocalyptic number.

It is an amenable number.

40022869 is a deficient number, since it is larger than the sum of its proper divisors (1).

40022869 is an equidigital number, since it uses as much as digits as its factorization.

40022869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 40022869 is about 6326.3630151929. The cubic root of 40022869 is about 342.0603526516.

The spelling of 40022869 in words is "forty million, twenty-two thousand, eight hundred sixty-nine".