40052069 has 2 divisors, whose sum is σ = 40052070. Its totient is φ = 40052068.

The previous prime is 40052063. The next prime is 40052081. The reversal of 40052069 is 96025004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26399044 + 13653025 = 5138^2 + 3695^2 .

It is a cyclic number.

It is not a de Polignac number, because 40052069 - 2⁴ = 40052053 is a prime.

It is a super-2 number, since 2×40052069² = 3208336462361522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40052063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20026034 + 20026035.

It is an arithmetic number, because the mean of its divisors is an integer number (20026035).

Almost surely, 2^40052069 is an apocalyptic number.

It is an amenable number.

40052069 is a deficient number, since it is larger than the sum of its proper divisors (1).

40052069 is an equidigital number, since it uses as much as digits as its factorization.

40052069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 40052069 is about 6328.6703974848. The cubic root of 40052069 is about 342.1435195548.

The spelling of 40052069 in words is "forty million, fifty-two thousand, sixty-nine".