77880339 has 16 divisors (see below), whose sum is σ = 119101440. Its totient is φ = 50244840.

The previous prime is 77880329. The next prime is 77880343. The reversal of 77880339 is 93308877.

It is not a de Polignac number, because 77880339 - 2⁵ = 77880307 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 77880294 and 77880303.

It is not an unprimeable number, because it can be changed into a prime (77880329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45687 + ... + 47360.

It is an arithmetic number, because the mean of its divisors is an integer number (7443840).

Almost surely, 2^77880339 is an apocalyptic number.

77880339 is a deficient number, since it is larger than the sum of its proper divisors (41221101).

77880339 is a wasteful number, since it uses less digits than its factorization.

77880339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93087 (or 93081 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 77880339 is about 8824.9837960191. The cubic root of 77880339 is about 427.0472646301.

The spelling of 77880339 in words is "seventy-seven million, eight hundred eighty thousand, three hundred thirty-nine".