80957843 has 4 divisors (see below), whose sum is σ = 81138600. Its totient is φ = 80777088.

The previous prime is 80957839. The next prime is 80957867. The reversal of 80957843 is 34875908.

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 80957843 - 2² = 80957839 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80957794 and 80957803.

It is not an unprimeable number, because it can be changed into a prime (80957873) 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, 89705 + ... + 90602.

It is an arithmetic number, because the mean of its divisors is an integer number (20284650).

Almost surely, 2^80957843 is an apocalyptic number.

80957843 is a deficient number, since it is larger than the sum of its proper divisors (180757).

80957843 is a wasteful number, since it uses less digits than its factorization.

80957843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180756.

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 80957843 is about 8997.6576396304. The cubic root of 80957843 is about 432.5997952079.

The spelling of 80957843 in words is "eighty million, nine hundred fifty-seven thousand, eight hundred forty-three".