40903843 has 2 divisors, whose sum is σ = 40903844. Its totient is φ = 40903842.

The previous prime is 40903829. The next prime is 40903859. The reversal of 40903843 is 34830904.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40903843 is a prime.

It is not a weakly prime, because it can be changed into another prime (40903813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20451921 + 20451922.

It is an arithmetic number, because the mean of its divisors is an integer number (20451922).

Almost surely, 2^40903843 is an apocalyptic number.

40903843 is a deficient number, since it is larger than the sum of its proper divisors (1).

40903843 is an equidigital number, since it uses as much as digits as its factorization.

40903843 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 40903843 is about 6395.6112295855. The cubic root of 40903843 is about 344.5519437349.

The spelling of 40903843 in words is "forty million, nine hundred three thousand, eight hundred forty-three".