77233139 has 2 divisors, whose sum is σ = 77233140. Its totient is φ = 77233138.

The previous prime is 77233133. The next prime is 77233187. The reversal of 77233139 is 93133277.

It is a weak prime.

It is an emirp because it is prime and its reverse (93133277) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77233139 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 77233099 and 77233108.

It is not a weakly prime, because it can be changed into another prime (77233133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38616569 + 38616570.

It is an arithmetic number, because the mean of its divisors is an integer number (38616570).

Almost surely, 2^77233139 is an apocalyptic number.

77233139 is a deficient number, since it is larger than the sum of its proper divisors (1).

77233139 is an equidigital number, since it uses as much as digits as its factorization.

77233139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23814, while the sum is 35.

The square root of 77233139 is about 8788.2386745013. The cubic root of 77233139 is about 425.8610253688.

The spelling of 77233139 in words is "seventy-seven million, two hundred thirty-three thousand, one hundred thirty-nine".