83409819 has 8 divisors (see below), whose sum is σ = 113579520. Its totient is φ = 54423336.

The previous prime is 83409811. The next prime is 83409827. The reversal of 83409819 is 91890438.

It is an interprime number because it is at equal distance from previous prime (83409811) and next prime (83409827).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 83409819 - 2³ = 83409811 is a prime.

It is a super-2 number, since 2×83409819² = 13914395811225522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (83409811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 295639 + ... + 295920.

It is an arithmetic number, because the mean of its divisors is an integer number (14197440).

Almost surely, 2^83409819 is an apocalyptic number.

83409819 is a deficient number, since it is larger than the sum of its proper divisors (30169701).

83409819 is a wasteful number, since it uses less digits than its factorization.

83409819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591609.

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 83409819 is about 9132.8976234271. The cubic root of 83409819 is about 436.9238242735.

The spelling of 83409819 in words is "eighty-three million, four hundred nine thousand, eight hundred nineteen".