80489965 has 8 divisors (see below), whose sum is σ = 96749208. Its totient is φ = 64284480.

The previous prime is 80489963. The next prime is 80489989. The reversal of 80489965 is 56998408.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 11964681 + 68525284 = 3459^2 + 8278^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 80489965 - 2¹ = 80489963 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 (80489963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10066 + ... + 16195.

It is an arithmetic number, because the mean of its divisors is an integer number (12093651).

Almost surely, 2^80489965 is an apocalyptic number.

It is an amenable number.

80489965 is a deficient number, since it is larger than the sum of its proper divisors (16259243).

80489965 is a wasteful number, since it uses less digits than its factorization.

80489965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26879.

The product of its (nonzero) digits is 622080, while the sum is 49.

The square root of 80489965 is about 8971.6199763476. The cubic root of 80489965 is about 431.7648128990.

The spelling of 80489965 in words is "eighty million, four hundred eighty-nine thousand, nine hundred sixty-five".