77988359 has 2 divisors, whose sum is σ = 77988360. Its totient is φ = 77988358.

The previous prime is 77988349. The next prime is 77988371. The reversal of 77988359 is 95388977.

It is a weak prime.

It is an emirp because it is prime and its reverse (95388977) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77988359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77988319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38994179 + 38994180.

It is an arithmetic number, because the mean of its divisors is an integer number (38994180).

Almost surely, 2^77988359 is an apocalyptic number.

77988359 is a deficient number, since it is larger than the sum of its proper divisors (1).

77988359 is an equidigital number, since it uses as much as digits as its factorization.

77988359 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3810240, while the sum is 56.

The square root of 77988359 is about 8831.1017998888. The cubic root of 77988359 is about 427.2446115483.

The spelling of 77988359 in words is "seventy-seven million, nine hundred eighty-eight thousand, three hundred fifty-nine".