71888413 has 2 divisors, whose sum is σ = 71888414. Its totient is φ = 71888412.

The previous prime is 71888371. The next prime is 71888449. The reversal of 71888413 is 31488817.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46758244 + 25130169 = 6838^2 + 5013^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71888413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71888483) 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, 35944206 + 35944207.

It is an arithmetic number, because the mean of its divisors is an integer number (35944207).

Almost surely, 2^71888413 is an apocalyptic number.

It is an amenable number.

71888413 is a deficient number, since it is larger than the sum of its proper divisors (1).

71888413 is an equidigital number, since it uses as much as digits as its factorization.

71888413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43008, while the sum is 40.

The square root of 71888413 is about 8478.7034975874. The cubic root of 71888413 is about 415.8017365302.

The spelling of 71888413 in words is "seventy-one million, eight hundred eighty-eight thousand, four hundred thirteen".