80129087 has 4 divisors (see below), whose sum is σ = 82294776. Its totient is φ = 77963400.

The previous prime is 80129083. The next prime is 80129089. The reversal of 80129087 is 78092108.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 80129087 - 2² = 80129083 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 (80129083) 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, 1082789 + ... + 1082862.

It is an arithmetic number, because the mean of its divisors is an integer number (20573694).

Almost surely, 2^80129087 is an apocalyptic number.

80129087 is a deficient number, since it is larger than the sum of its proper divisors (2165689).

80129087 is a wasteful number, since it uses less digits than its factorization.

80129087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2165688.

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 80129087 is about 8951.4851840351. The cubic root of 80129087 is about 431.1185713898.

The spelling of 80129087 in words is "eighty million, one hundred twenty-nine thousand, eighty-seven".