71988383 has 2 divisors, whose sum is σ = 71988384. Its totient is φ = 71988382.

The previous prime is 71988373. The next prime is 71988401. The reversal of 71988383 is 38388917.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71988383 - 2⁸ = 71988127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71988313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35994191 + 35994192.

It is an arithmetic number, because the mean of its divisors is an integer number (35994192).

Almost surely, 2^71988383 is an apocalyptic number.

71988383 is a deficient number, since it is larger than the sum of its proper divisors (1).

71988383 is an equidigital number, since it uses as much as digits as its factorization.

71988383 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 47.

The square root of 71988383 is about 8484.5968083345. The cubic root of 71988383 is about 415.9943890238.

The spelling of 71988383 in words is "seventy-one million, nine hundred eighty-eight thousand, three hundred eighty-three".