40810069 has 2 divisors, whose sum is σ = 40810070. Its totient is φ = 40810068.

The previous prime is 40810009. The next prime is 40810087. The reversal of 40810069 is 96001804.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32341969 + 8468100 = 5687^2 + 2910^2 .

It is a cyclic number.

It is not a de Polignac number, because 40810069 - 2¹⁵ = 40777301 is a prime.

It is a super-2 number, since 2×40810069² = 3330923463569522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40810009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20405034 + 20405035.

It is an arithmetic number, because the mean of its divisors is an integer number (20405035).

Almost surely, 2^40810069 is an apocalyptic number.

It is an amenable number.

40810069 is a deficient number, since it is larger than the sum of its proper divisors (1).

40810069 is an equidigital number, since it uses as much as digits as its factorization.

40810069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 40810069 is about 6388.2759019942. The cubic root of 40810069 is about 344.2884417112.

The spelling of 40810069 in words is "forty million, eight hundred ten thousand, sixty-nine".