83409871 has 16 divisors (see below), whose sum is σ = 91819008. Its totient is φ = 75427200.

The previous prime is 83409857. The next prime is 83409947. The reversal of 83409871 is 17890438.

It is a cyclic number.

It is not a de Polignac number, because 83409871 - 2⁵ = 83409839 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 (83409811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85416 + ... + 86386.

It is an arithmetic number, because the mean of its divisors is an integer number (5738688).

Almost surely, 2^83409871 is an apocalyptic number.

83409871 is a deficient number, since it is larger than the sum of its proper divisors (8409137).

83409871 is a wasteful number, since it uses less digits than its factorization.

83409871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1182.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 83409871 is about 9132.9004702778. The cubic root of 83409871 is about 436.9239150703.

The spelling of 83409871 in words is "eighty-three million, four hundred nine thousand, eight hundred seventy-one".