71072899 has 2 divisors, whose sum is σ = 71072900. Its totient is φ = 71072898.

The previous prime is 71072879. The next prime is 71072929. The reversal of 71072899 is 99827017.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (99827017) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71072899 - 2¹⁵ = 71040131 is a prime.

It is not a weakly prime, because it can be changed into another prime (71072849) 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, 35536449 + 35536450.

It is an arithmetic number, because the mean of its divisors is an integer number (35536450).

Almost surely, 2^71072899 is an apocalyptic number.

71072899 is a deficient number, since it is larger than the sum of its proper divisors (1).

71072899 is an equidigital number, since it uses as much as digits as its factorization.

71072899 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504, while the sum is 43.

The square root of 71072899 is about 8430.4744231864. The cubic root of 71072899 is about 414.2234454682.

The spelling of 71072899 in words is "seventy-one million, seventy-two thousand, eight hundred ninety-nine".