80868309 has 8 divisors (see below), whose sum is σ = 107884512. Its totient is φ = 53882160.

The previous prime is 80868289. The next prime is 80868383. The reversal of 80868309 is 90386808.

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

It is not a de Polignac number, because 80868309 - 2¹⁹ = 80344021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80868209) 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, 222 + ... + 12719.

It is an arithmetic number, because the mean of its divisors is an integer number (13485564).

Almost surely, 2^80868309 is an apocalyptic number.

It is an amenable number.

80868309 is a deficient number, since it is larger than the sum of its proper divisors (27016203).

80868309 is a wasteful number, since it uses less digits than its factorization.

80868309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15027.

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 80868309 is about 8992.6808572305. The cubic root of 80868309 is about 432.4402608302.

The spelling of 80868309 in words is "eighty million, eight hundred sixty-eight thousand, three hundred nine".