82439877 has 8 divisors (see below), whose sum is σ = 118375264. Its totient is φ = 50732208.

The previous prime is 82439873. The next prime is 82439911. The reversal of 82439877 is 77893428.

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

It is not a de Polignac number, because 82439877 - 2² = 82439873 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 (82439873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1056883 + ... + 1056960.

It is an arithmetic number, because the mean of its divisors is an integer number (14796908).

Almost surely, 2^82439877 is an apocalyptic number.

It is an amenable number.

82439877 is a deficient number, since it is larger than the sum of its proper divisors (35935387).

82439877 is a wasteful number, since it uses less digits than its factorization.

82439877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2113859.

The product of its digits is 677376, while the sum is 48.

The square root of 82439877 is about 9079.6407968598. The cubic root of 82439877 is about 435.2236081174.

The spelling of 82439877 in words is "eighty-two million, four hundred thirty-nine thousand, eight hundred seventy-seven".