40356223 has 2 divisors, whose sum is σ = 40356224. Its totient is φ = 40356222.

The previous prime is 40356179. The next prime is 40356263. The reversal of 40356223 is 32265304.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40356223 - 2¹⁷ = 40225151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40356263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20178111 + 20178112.

It is an arithmetic number, because the mean of its divisors is an integer number (20178112).

Almost surely, 2^40356223 is an apocalyptic number.

40356223 is a deficient number, since it is larger than the sum of its proper divisors (1).

40356223 is an equidigital number, since it uses as much as digits as its factorization.

40356223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 40356223 is about 6352.6547993733. The cubic root of 40356223 is about 343.0074117175.

The spelling of 40356223 in words is "forty million, three hundred fifty-six thousand, two hundred twenty-three".