71983903 has 2 divisors, whose sum is σ = 71983904. Its totient is φ = 71983902.

The previous prime is 71983883. The next prime is 71983921. The reversal of 71983903 is 30938917.

It is a strong prime.

It is an emirp because it is prime and its reverse (30938917) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71983903 - 2¹³ = 71975711 is a prime.

It is a super-2 number, since 2×71983903² = 10363364582226818, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71983943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35991951 + 35991952.

It is an arithmetic number, because the mean of its divisors is an integer number (35991952).

Almost surely, 2^71983903 is an apocalyptic number.

71983903 is a deficient number, since it is larger than the sum of its proper divisors (1).

71983903 is an equidigital number, since it uses as much as digits as its factorization.

71983903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 71983903 is about 8484.3327963960. The cubic root of 71983903 is about 415.9857594207.

The spelling of 71983903 in words is "seventy-one million, nine hundred eighty-three thousand, nine hundred three".