40223369 has 2 divisors, whose sum is σ = 40223370. Its totient is φ = 40223368.

The previous prime is 40223363. The next prime is 40223371. The reversal of 40223369 is 96332204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38502025 + 1721344 = 6205^2 + 1312^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40223369 is a prime.

It is a super-2 number, since 2×40223369² = 3235838827420322, which contains 22 as substring.

Together with 40223371, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40223363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20111684 + 20111685.

It is an arithmetic number, because the mean of its divisors is an integer number (20111685).

Almost surely, 2^40223369 is an apocalyptic number.

It is an amenable number.

40223369 is a deficient number, since it is larger than the sum of its proper divisors (1).

40223369 is an equidigital number, since it uses as much as digits as its factorization.

40223369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 40223369 is about 6342.1896061218. The cubic root of 40223369 is about 342.6306007343.

The spelling of 40223369 in words is "forty million, two hundred twenty-three thousand, three hundred sixty-nine".