77789932 has 18 divisors (see below), whose sum is σ = 149634044. Its totient is φ = 35358840.

The previous prime is 77789923. The next prime is 77789939. The reversal of 77789932 is 23998777.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 77789932.

It is not an unprimeable number, because it can be changed into a prime (77789939) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 79878 + ... + 80845.

Almost surely, 2^77789932 is an apocalyptic number.

It is an amenable number.

77789932 is a deficient number, since it is larger than the sum of its proper divisors (71844112).

77789932 is a wasteful number, since it uses less digits than its factorization.

77789932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160749 (or 160736 counting only the distinct ones).

The product of its digits is 1333584, while the sum is 52.

The square root of 77789932 is about 8819.8600895933. The cubic root of 77789932 is about 426.8819554240.

It can be divided in two parts, 777 and 89932, that added together give a palindrome (90709).

The spelling of 77789932 in words is "seventy-seven million, seven hundred eighty-nine thousand, nine hundred thirty-two".