71923843 has 2 divisors, whose sum is σ = 71923844. Its totient is φ = 71923842.

The previous prime is 71923823. The next prime is 71923849. The reversal of 71923843 is 34832917.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71923843 - 2¹⁷ = 71792771 is a prime.

It is not a weakly prime, because it can be changed into another prime (71923849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35961921 + 35961922.

It is an arithmetic number, because the mean of its divisors is an integer number (35961922).

Almost surely, 2^71923843 is an apocalyptic number.

71923843 is a deficient number, since it is larger than the sum of its proper divisors (1).

71923843 is an equidigital number, since it uses as much as digits as its factorization.

71923843 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 37.

The square root of 71923843 is about 8480.7925926767. The cubic root of 71923843 is about 415.8700342126.

The spelling of 71923843 in words is "seventy-one million, nine hundred twenty-three thousand, eight hundred forty-three".