80839770 has 64 divisors (see below), whose sum is σ = 212889600. Its totient is φ = 19483200.

The previous prime is 80839769. The next prime is 80839789. The reversal of 80839770 is 7793808.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65055 + ... + 66285.

It is an arithmetic number, because the mean of its divisors is an integer number (3326400).

Almost surely, 2^80839770 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80839770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106444800).

80839770 is an abundant number, since it is smaller than the sum of its proper divisors (132049830).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80839770 is a wasteful number, since it uses less digits than its factorization.

80839770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1451.

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 80839770 is about 8991.0939267700. The cubic root of 80839770 is about 432.3893844328.

The spelling of 80839770 in words is "eighty million, eight hundred thirty-nine thousand, seven hundred seventy".