80417861 has 4 divisors (see below), whose sum is σ = 84650400. Its totient is φ = 76185324.

The previous prime is 80417849. The next prime is 80417863. The reversal of 80417861 is 16871408.

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 a cyclic number.

It is not a de Polignac number, because 80417861 - 2²² = 76223557 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 (80417863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2116241 + ... + 2116278.

It is an arithmetic number, because the mean of its divisors is an integer number (21162600).

Almost surely, 2^80417861 is an apocalyptic number.

It is an amenable number.

80417861 is a deficient number, since it is larger than the sum of its proper divisors (4232539).

80417861 is a wasteful number, since it uses less digits than its factorization.

80417861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4232538.

The product of its (nonzero) digits is 10752, while the sum is 35.

The square root of 80417861 is about 8967.6006267005. The cubic root of 80417861 is about 431.6358474607.

The spelling of 80417861 in words is "eighty million, four hundred seventeen thousand, eight hundred sixty-one".