40603903 has 2 divisors, whose sum is σ = 40603904. Its totient is φ = 40603902.

The previous prime is 40603891. The next prime is 40603907. The reversal of 40603903 is 30930604.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40603903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40603907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20301951 + 20301952.

It is an arithmetic number, because the mean of its divisors is an integer number (20301952).

Almost surely, 2^40603903 is an apocalyptic number.

40603903 is a deficient number, since it is larger than the sum of its proper divisors (1).

40603903 is an equidigital number, since it uses as much as digits as its factorization.

40603903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 40603903 is about 6372.1191922311. The cubic root of 40603903 is about 343.7076991254.

The spelling of 40603903 in words is "forty million, six hundred three thousand, nine hundred three".