80443723 has 4 divisors (see below), whose sum is σ = 80567568. Its totient is φ = 80319880.

The previous prime is 80443717. The next prime is 80443747. The reversal of 80443723 is 32734408.

It is a happy number.

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 80443723 - 2⁵ = 80443691 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80443123) 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, 60943 + ... + 62248.

It is an arithmetic number, because the mean of its divisors is an integer number (20141892).

Almost surely, 2^80443723 is an apocalyptic number.

80443723 is a deficient number, since it is larger than the sum of its proper divisors (123845).

80443723 is a wasteful number, since it uses less digits than its factorization.

80443723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123844.

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 80443723 is about 8969.0424795515. The cubic root of 80443723 is about 431.6821131771.

The spelling of 80443723 in words is "eighty million, four hundred forty-three thousand, seven hundred twenty-three".