80027999 has 8 divisors (see below), whose sum is σ = 81522000. Its totient is φ = 78547392.

The previous prime is 80027989. The next prime is 80028043. The reversal of 80027999 is 99972008.

80027999 = 392² + 393² + ... + 669².

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80027999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80027939) 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, 9137 + ... + 15605.

It is an arithmetic number, because the mean of its divisors is an integer number (10190250).

Almost surely, 2^80027999 is an apocalyptic number.

80027999 is a gapful number since it is divisible by the number (89) formed by its first and last digit.

80027999 is a deficient number, since it is larger than the sum of its proper divisors (1494001).

80027999 is a wasteful number, since it uses less digits than its factorization.

80027999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6697.

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 80027999 is about 8945.8369647563. The cubic root of 80027999 is about 430.9372004905.

The spelling of 80027999 in words is "eighty million, twenty-seven thousand, nine hundred ninety-nine".