82387739 has 8 divisors (see below), whose sum is σ = 97195008. Its totient is φ = 68339880.

The previous prime is 82387717. The next prime is 82387769. The reversal of 82387739 is 93778328.

It is a happy number.

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

It is not a de Polignac number, because 82387739 - 2²⁰ = 81339163 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 82387693 and 82387702.

It is not an unprimeable number, because it can be changed into a prime (82387769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189617 + ... + 190050.

It is an arithmetic number, because the mean of its divisors is an integer number (12149376).

Almost surely, 2^82387739 is an apocalyptic number.

82387739 is a deficient number, since it is larger than the sum of its proper divisors (14807269).

82387739 is a wasteful number, since it uses less digits than its factorization.

82387739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379705.

The product of its digits is 508032, while the sum is 47.

The square root of 82387739 is about 9076.7691939368. The cubic root of 82387739 is about 435.1318383143.

The spelling of 82387739 in words is "eighty-two million, three hundred eighty-seven thousand, seven hundred thirty-nine".