80234989 has 4 divisors (see below), whose sum is σ = 80524924. Its totient is φ = 79945056.

The previous prime is 80234977. The next prime is 80234993. The reversal of 80234989 is 98943208.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 17556100 + 62678889 = 4190^2 + 7917^2 .

It is a cyclic number.

It is not a de Polignac number, because 80234989 - 2⁹ = 80234477 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 (80232989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144552 + ... + 145105.

It is an arithmetic number, because the mean of its divisors is an integer number (20131231).

Almost surely, 2^80234989 is an apocalyptic number.

It is an amenable number.

80234989 is a deficient number, since it is larger than the sum of its proper divisors (289935).

80234989 is a wasteful number, since it uses less digits than its factorization.

80234989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289934.

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 80234989 is about 8957.3985620826. The cubic root of 80234989 is about 431.3084159753.

The spelling of 80234989 in words is "eighty million, two hundred thirty-four thousand, nine hundred eighty-nine".