80791129 has 4 divisors (see below), whose sum is σ = 83577060. Its totient is φ = 78005200.

The previous prime is 80791103. The next prime is 80791141. The reversal of 80791129 is 92119708.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 36542025 + 44249104 = 6045^2 + 6652^2 .

It is a cyclic number.

It is not a de Polignac number, because 80791129 - 2¹¹ = 80789081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80795129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1392922 + ... + 1392979.

It is an arithmetic number, because the mean of its divisors is an integer number (20894265).

Almost surely, 2^80791129 is an apocalyptic number.

It is an amenable number.

80791129 is a deficient number, since it is larger than the sum of its proper divisors (2785931).

80791129 is a wasteful number, since it uses less digits than its factorization.

80791129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2785930.

The product of its (nonzero) digits is 9072, while the sum is 37.

The square root of 80791129 is about 8988.3885652546. The cubic root of 80791129 is about 432.3026446522.

The spelling of 80791129 in words is "eighty million, seven hundred ninety-one thousand, one hundred twenty-nine".