82379855 has 4 divisors (see below), whose sum is σ = 98855832. Its totient is φ = 65903880.

The previous prime is 82379851. The next prime is 82379863. The reversal of 82379855 is 55897328.

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

It is not a de Polignac number, because 82379855 - 2² = 82379851 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 (82379851) 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, 8237981 + ... + 8237990.

It is an arithmetic number, because the mean of its divisors is an integer number (24713958).

Almost surely, 2^82379855 is an apocalyptic number.

82379855 is a deficient number, since it is larger than the sum of its proper divisors (16475977).

82379855 is a wasteful number, since it uses less digits than its factorization.

82379855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16475976.

The product of its digits is 604800, while the sum is 47.

The square root of 82379855 is about 9076.3348880481. The cubic root of 82379855 is about 435.1179580578.

The spelling of 82379855 in words is "eighty-two million, three hundred seventy-nine thousand, eight hundred fifty-five".