40297903 has 2 divisors, whose sum is σ = 40297904. Its totient is φ = 40297902.

The previous prime is 40297891. The next prime is 40297919. The reversal of 40297903 is 30979204.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40297903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40297963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20148951 + 20148952.

It is an arithmetic number, because the mean of its divisors is an integer number (20148952).

Almost surely, 2^40297903 is an apocalyptic number.

40297903 is a deficient number, since it is larger than the sum of its proper divisors (1).

40297903 is an equidigital number, since it uses as much as digits as its factorization.

40297903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 40297903 is about 6348.0629328954. The cubic root of 40297903 is about 342.8421019278.

The spelling of 40297903 in words is "forty million, two hundred ninety-seven thousand, nine hundred three".