40340903 has 2 divisors, whose sum is σ = 40340904. Its totient is φ = 40340902.

The previous prime is 40340893. The next prime is 40340953. The reversal of 40340903 is 30904304.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40340903 - 2⁸ = 40340647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40340953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20170451 + 20170452.

It is an arithmetic number, because the mean of its divisors is an integer number (20170452).

Almost surely, 2^40340903 is an apocalyptic number.

40340903 is a deficient number, since it is larger than the sum of its proper divisors (1).

40340903 is an equidigital number, since it uses as much as digits as its factorization.

40340903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 40340903 is about 6351.4488898203. The cubic root of 40340903 is about 342.9640021494.

The spelling of 40340903 in words is "forty million, three hundred forty thousand, nine hundred three".