80433491 has 4 divisors (see below), whose sum is σ = 80927112. Its totient is φ = 79939872.

The previous prime is 80433473. The next prime is 80433503. The reversal of 80433491 is 19433408.

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 80433491 - 2¹⁰ = 80432467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80433401) 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, 246566 + ... + 246891.

It is an arithmetic number, because the mean of its divisors is an integer number (20231778).

Almost surely, 2^80433491 is an apocalyptic number.

80433491 is a deficient number, since it is larger than the sum of its proper divisors (493621).

80433491 is a wasteful number, since it uses less digits than its factorization.

80433491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493620.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 80433491 is about 8968.4720549266. The cubic root of 80433491 is about 431.6638098693.

Adding to 80433491 its reverse (19433408), we get a palindrome (99866899).

The spelling of 80433491 in words is "eighty million, four hundred thirty-three thousand, four hundred ninety-one".