80439135 has 24 divisors (see below), whose sum is σ = 149716656. Its totient is φ = 36771840.

The previous prime is 80439131. The next prime is 80439173. The reversal of 80439135 is 53193408.

It is not a de Polignac number, because 80439135 - 2² = 80439131 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 80439096 and 80439105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80439131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53986 + ... + 55455.

It is an arithmetic number, because the mean of its divisors is an integer number (6238194).

Almost surely, 2^80439135 is an apocalyptic number.

80439135 is a deficient number, since it is larger than the sum of its proper divisors (69277521).

80439135 is a wasteful number, since it uses less digits than its factorization.

80439135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109463 (or 109456 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 80439135 is about 8968.7867072420. The cubic root of 80439135 is about 431.6739062174.

The spelling of 80439135 in words is "eighty million, four hundred thirty-nine thousand, one hundred thirty-five".