80717399 has 8 divisors (see below), whose sum is σ = 92305920. Its totient is φ = 69143256.

The previous prime is 80717389. The next prime is 80717431. The reversal of 80717399 is 99371708.

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

It is a de Polignac number, because none of the positive numbers 2^k-80717399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80717389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14582 + ... + 19340.

It is an arithmetic number, because the mean of its divisors is an integer number (11538240).

Almost surely, 2^80717399 is an apocalyptic number.

80717399 is a deficient number, since it is larger than the sum of its proper divisors (11588521).

80717399 is a wasteful number, since it uses less digits than its factorization.

80717399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7189.

The product of its (nonzero) digits is 95256, while the sum is 44.

The square root of 80717399 is about 8984.2862265179. The cubic root of 80717399 is about 432.1710981352.

The spelling of 80717399 in words is "eighty million, seven hundred seventeen thousand, three hundred ninety-nine".