40170943 has 2 divisors, whose sum is σ = 40170944. Its totient is φ = 40170942.

The previous prime is 40170931. The next prime is 40170961. The reversal of 40170943 is 34907104.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40170943 is a prime.

It is a super-2 number, since 2×40170943² = 3227409323018498, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40170973) 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, 20085471 + 20085472.

It is an arithmetic number, because the mean of its divisors is an integer number (20085472).

Almost surely, 2^40170943 is an apocalyptic number.

40170943 is a deficient number, since it is larger than the sum of its proper divisors (1).

40170943 is an equidigital number, since it uses as much as digits as its factorization.

40170943 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 40170943 is about 6338.0551433385. The cubic root of 40170943 is about 342.4816776744.

The spelling of 40170943 in words is "forty million, one hundred seventy thousand, nine hundred forty-three".