40430903 has 2 divisors, whose sum is σ = 40430904. Its totient is φ = 40430902.

The previous prime is 40430881. The next prime is 40430911. The reversal of 40430903 is 30903404.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40430903 - 2⁶ = 40430839 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40430963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20215451 + 20215452.

It is an arithmetic number, because the mean of its divisors is an integer number (20215452).

Almost surely, 2^40430903 is an apocalyptic number.

40430903 is a deficient number, since it is larger than the sum of its proper divisors (1).

40430903 is an equidigital number, since it uses as much as digits as its factorization.

40430903 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 40430903 is about 6358.5299401670. The cubic root of 40430903 is about 343.2188620382.

The spelling of 40430903 in words is "forty million, four hundred thirty thousand, nine hundred three".