71916899 has 8 divisors (see below), whose sum is σ = 73162320. Its totient is φ = 70678656.

The previous prime is 71916893. The next prime is 71916907. The reversal of 71916899 is 99861917.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71916899 - 2¹² = 71912803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71916893) 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 in 7 ways as a sum of consecutive naturals, for example, 20807 + ... + 24015.

It is an arithmetic number, because the mean of its divisors is an integer number (9145290).

Almost surely, 2^71916899 is an apocalyptic number.

71916899 is a deficient number, since it is larger than the sum of its proper divisors (1245421).

71916899 is a wasteful number, since it uses less digits than its factorization.

71916899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3589.

The product of its digits is 244944, while the sum is 50.

The square root of 71916899 is about 8480.3831870971. The cubic root of 71916899 is about 415.8566501741.

The spelling of 71916899 in words is "seventy-one million, nine hundred sixteen thousand, eight hundred ninety-nine".