76855139 has 2 divisors, whose sum is σ = 76855140. Its totient is φ = 76855138.

The previous prime is 76855127. The next prime is 76855151. The reversal of 76855139 is 93155867.

It is a balanced prime because it is at equal distance from previous prime (76855127) and next prime (76855151).

It is a cyclic number.

It is not a de Polignac number, because 76855139 - 2⁴ = 76855123 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 76855139.

It is not a weakly prime, because it can be changed into another prime (76855039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38427569 + 38427570.

It is an arithmetic number, because the mean of its divisors is an integer number (38427570).

Almost surely, 2^76855139 is an apocalyptic number.

76855139 is a deficient number, since it is larger than the sum of its proper divisors (1).

76855139 is an equidigital number, since it uses as much as digits as its factorization.

76855139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 226800, while the sum is 44.

The square root of 76855139 is about 8766.7062800119. The cubic root of 76855139 is about 425.1651289123.

The spelling of 76855139 in words is "seventy-six million, eight hundred fifty-five thousand, one hundred thirty-nine".