82419859 has 4 divisors (see below), whose sum is σ = 87268104. Its totient is φ = 77571616.

The previous prime is 82419839. The next prime is 82419871. The reversal of 82419859 is 95891428.

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 82419859 - 2²¹ = 80322707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82419839) 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, 2424097 + ... + 2424130.

It is an arithmetic number, because the mean of its divisors is an integer number (21817026).

Almost surely, 2^82419859 is an apocalyptic number.

82419859 is a deficient number, since it is larger than the sum of its proper divisors (4848245).

82419859 is a wasteful number, since it uses less digits than its factorization.

82419859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4848244.

The product of its digits is 207360, while the sum is 46.

The square root of 82419859 is about 9078.5383735489. The cubic root of 82419859 is about 435.1883783566.

The spelling of 82419859 in words is "eighty-two million, four hundred nineteen thousand, eight hundred fifty-nine".