80489279 has 4 divisors (see below), whose sum is σ = 86680776. Its totient is φ = 74297784.

The previous prime is 80489267. The next prime is 80489287. The reversal of 80489279 is 97298408.

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 80489279 - 2¹⁶ = 80423743 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80489209) 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, 3095729 + ... + 3095754.

It is an arithmetic number, because the mean of its divisors is an integer number (21670194).

Almost surely, 2^80489279 is an apocalyptic number.

80489279 is a deficient number, since it is larger than the sum of its proper divisors (6191497).

80489279 is a wasteful number, since it uses less digits than its factorization.

80489279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6191496.

The product of its (nonzero) digits is 290304, while the sum is 47.

The square root of 80489279 is about 8971.5817445978. The cubic root of 80489279 is about 431.7635862803.

The spelling of 80489279 in words is "eighty million, four hundred eighty-nine thousand, two hundred seventy-nine".