80479689 has 16 divisors (see below), whose sum is σ = 111214080. Its totient is φ = 51713280.

The previous prime is 80479673. The next prime is 80479709. The reversal of 80479689 is 98697408.

It is a happy number.

It is not a de Polignac number, because 80479689 - 2⁴ = 80479673 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80479489) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 23409 + ... + 26625.

It is an arithmetic number, because the mean of its divisors is an integer number (6950880).

Almost surely, 2^80479689 is an apocalyptic number.

It is an amenable number.

80479689 is a deficient number, since it is larger than the sum of its proper divisors (30734391).

80479689 is a wasteful number, since it uses less digits than its factorization.

80479689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3520.

The product of its (nonzero) digits is 870912, while the sum is 51.

The square root of 80479689 is about 8971.0472632798. The cubic root of 80479689 is about 431.7464379209.

The spelling of 80479689 in words is "eighty million, four hundred seventy-nine thousand, six hundred eighty-nine".