40366069 has 2 divisors, whose sum is σ = 40366070. Its totient is φ = 40366068.

The previous prime is 40366063. The next prime is 40366087. The reversal of 40366069 is 96066304.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32913169 + 7452900 = 5737^2 + 2730^2 .

It is a cyclic number.

It is not a de Polignac number, because 40366069 - 2¹⁵ = 40333301 is a prime.

It is a super-2 number, since 2×40366069² = 3258839053025522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40366063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20183034 + 20183035.

It is an arithmetic number, because the mean of its divisors is an integer number (20183035).

Almost surely, 2^40366069 is an apocalyptic number.

It is an amenable number.

40366069 is a deficient number, since it is larger than the sum of its proper divisors (1).

40366069 is an equidigital number, since it uses as much as digits as its factorization.

40366069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 40366069 is about 6353.4297037112. The cubic root of 40366069 is about 343.0353047834.

The spelling of 40366069 in words is "forty million, three hundred sixty-six thousand, sixty-nine".