80543829 has 4 divisors (see below), whose sum is σ = 107391776. Its totient is φ = 53695884.

The previous prime is 80543821. The next prime is 80543833. The reversal of 80543829 is 92834508.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 80543829 - 2³ = 80543821 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 (80543821) 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, 13423969 + ... + 13423974.

It is an arithmetic number, because the mean of its divisors is an integer number (26847944).

Almost surely, 2^80543829 is an apocalyptic number.

It is an amenable number.

80543829 is a deficient number, since it is larger than the sum of its proper divisors (26847947).

80543829 is a wasteful number, since it uses less digits than its factorization.

80543829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26847946.

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 80543829 is about 8974.6213847716. The cubic root of 80543829 is about 431.8611039668.

The spelling of 80543829 in words is "eighty million, five hundred forty-three thousand, eight hundred twenty-nine".