80853909 has 8 divisors (see below), whose sum is σ = 107848032. Its totient is φ = 53881200.

The previous prime is 80853881. The next prime is 80853923. The reversal of 80853909 is 90935808.

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

It is not a de Polignac number, because 80853909 - 2¹⁶ = 80788373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80853979) 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, 8827 + ... + 15479.

It is an arithmetic number, because the mean of its divisors is an integer number (13481004).

Almost surely, 2^80853909 is an apocalyptic number.

It is an amenable number.

80853909 is a deficient number, since it is larger than the sum of its proper divisors (26994123).

80853909 is a wasteful number, since it uses less digits than its factorization.

80853909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10707.

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 80853909 is about 8991.8801704649. The cubic root of 80853909 is about 432.4145914858.

The spelling of 80853909 in words is "eighty million, eight hundred fifty-three thousand, nine hundred nine".