83816459 has 4 divisors (see below), whose sum is σ = 84102816. Its totient is φ = 83530104.

The previous prime is 83816449. The next prime is 83816461. The reversal of 83816459 is 95461838.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83816459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83816419) 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, 142739 + ... + 143324.

It is an arithmetic number, because the mean of its divisors is an integer number (21025704).

Almost surely, 2^83816459 is an apocalyptic number.

83816459 is a deficient number, since it is larger than the sum of its proper divisors (286357).

83816459 is a wasteful number, since it uses less digits than its factorization.

83816459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286356.

The product of its digits is 207360, while the sum is 44.

The square root of 83816459 is about 9155.1329318585. The cubic root of 83816459 is about 437.6327046685.

The spelling of 83816459 in words is "eighty-three million, eight hundred sixteen thousand, four hundred fifty-nine".