82739845 has 16 divisors (see below), whose sum is σ = 102341232. Its totient is φ = 64176640.

The previous prime is 82739831. The next prime is 82739897. The reversal of 82739845 is 54893728.

It can be written as a sum of positive squares in 8 ways, for example, as 3048516 + 79691329 = 1746^2 + 8927^2 .

It is not a de Polignac number, because 82739845 - 2¹¹ = 82737797 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 82739795 and 82739804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34299 + ... + 36631.

It is an arithmetic number, because the mean of its divisors is an integer number (6396327).

Almost surely, 2^82739845 is an apocalyptic number.

It is an amenable number.

82739845 is a deficient number, since it is larger than the sum of its proper divisors (19601387).

82739845 is a wasteful number, since it uses less digits than its factorization.

82739845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2552.

The product of its digits is 483840, while the sum is 46.

The square root of 82739845 is about 9096.1445129241. The cubic root of 82739845 is about 435.7508413552.

The spelling of 82739845 in words is "eighty-two million, seven hundred thirty-nine thousand, eight hundred forty-five".