71488399 has 2 divisors, whose sum is σ = 71488400. Its totient is φ = 71488398.

The previous prime is 71488357. The next prime is 71488411. The reversal of 71488399 is 99388417.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71488399 - 2¹¹ = 71486351 is a prime.

It is a super-2 number, since 2×71488399² = 10221182383166402, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71488309) 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, 35744199 + 35744200.

It is an arithmetic number, because the mean of its divisors is an integer number (35744200).

Almost surely, 2^71488399 is an apocalyptic number.

71488399 is a deficient number, since it is larger than the sum of its proper divisors (1).

71488399 is an equidigital number, since it uses as much as digits as its factorization.

71488399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 49.

The square root of 71488399 is about 8455.0812533056. The cubic root of 71488399 is about 415.0290762035.

The spelling of 71488399 in words is "seventy-one million, four hundred eighty-eight thousand, three hundred ninety-nine".