76839841 has 8 divisors (see below), whose sum is σ = 83681640. Its totient is φ = 70131072.

The previous prime is 76839827. The next prime is 76839859. The reversal of 76839841 is 14893867.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 364816 + 76475025 = 604^2 + 8745^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76839841 is a prime.

It is a super-2 number, since 2×76839841² = 11808722329810562, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 76839791 and 76839800.

It is not an unprimeable number, because it can be changed into a prime (76839871) 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, 32050 + ... + 34363.

It is an arithmetic number, because the mean of its divisors is an integer number (10460205).

Almost surely, 2^76839841 is an apocalyptic number.

It is an amenable number.

76839841 is a deficient number, since it is larger than the sum of its proper divisors (6841799).

76839841 is a wasteful number, since it uses less digits than its factorization.

76839841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66515.

The product of its digits is 290304, while the sum is 46.

The square root of 76839841 is about 8765.8337310264. The cubic root of 76839841 is about 425.1369173625.

The spelling of 76839841 in words is "seventy-six million, eight hundred thirty-nine thousand, eight hundred forty-one".