40565269 has 2 divisors, whose sum is σ = 40565270. Its totient is φ = 40565268.

The previous prime is 40565263. The next prime is 40565279. The reversal of 40565269 is 96256504.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20584369 + 19980900 = 4537^2 + 4470^2 .

It is a cyclic number.

It is not a de Polignac number, because 40565269 - 2⁷ = 40565141 is a prime.

It is a super-2 number, since 2×40565269² = 3291082098084722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40565263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20282634 + 20282635.

It is an arithmetic number, because the mean of its divisors is an integer number (20282635).

Almost surely, 2^40565269 is an apocalyptic number.

It is an amenable number.

40565269 is a deficient number, since it is larger than the sum of its proper divisors (1).

40565269 is an equidigital number, since it uses as much as digits as its factorization.

40565269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 40565269 is about 6369.0869832339. The cubic root of 40565269 is about 343.5986536394.

The spelling of 40565269 in words is "forty million, five hundred sixty-five thousand, two hundred sixty-nine".