40403317 has 2 divisors, whose sum is σ = 40403318. Its totient is φ = 40403316.

The previous prime is 40403309. The next prime is 40403369. The reversal of 40403317 is 71330404.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25341156 + 15062161 = 5034^2 + 3881^2 .

It is a cyclic number.

It is not a de Polignac number, because 40403317 - 2³ = 40403309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40403417) 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, 20201658 + 20201659.

It is an arithmetic number, because the mean of its divisors is an integer number (20201659).

Almost surely, 2^40403317 is an apocalyptic number.

It is an amenable number.

40403317 is a deficient number, since it is larger than the sum of its proper divisors (1).

40403317 is an equidigital number, since it uses as much as digits as its factorization.

40403317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 40403317 is about 6356.3603579407. The cubic root of 40403317 is about 343.1407848828.

The spelling of 40403317 in words is "forty million, four hundred three thousand, three hundred seventeen".