40093217 has 2 divisors, whose sum is σ = 40093218. Its totient is φ = 40093216.

The previous prime is 40093189. The next prime is 40093219. The reversal of 40093217 is 71239004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39551521 + 541696 = 6289^2 + 736^2 .

It is a cyclic number.

It is not a de Polignac number, because 40093217 - 2⁸ = 40092961 is a prime.

Together with 40093219, 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 (40093219) 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, 20046608 + 20046609.

It is an arithmetic number, because the mean of its divisors is an integer number (20046609).

Almost surely, 2^40093217 is an apocalyptic number.

It is an amenable number.

40093217 is a deficient number, since it is larger than the sum of its proper divisors (1).

40093217 is an equidigital number, since it uses as much as digits as its factorization.

40093217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 40093217 is about 6331.9204827603. The cubic root of 40093217 is about 342.2606479446.

The spelling of 40093217 in words is "forty million, ninety-three thousand, two hundred seventeen".