77319938 has 8 divisors (see below), whose sum is σ = 116047632. Its totient is φ = 38637396.

The previous prime is 77319917. The next prime is 77319941. The reversal of 77319938 is 83991377.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 77319892 and 77319901.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6620 + ... + 14087.

It is an arithmetic number, because the mean of its divisors is an integer number (14505954).

Almost surely, 2^77319938 is an apocalyptic number.

77319938 is a deficient number, since it is larger than the sum of its proper divisors (38727694).

77319938 is a wasteful number, since it uses less digits than its factorization.

77319938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22576.

The product of its digits is 285768, while the sum is 47.

The square root of 77319938 is about 8793.1756493317. The cubic root of 77319938 is about 426.0205012653.

The spelling of 77319938 in words is "seventy-seven million, three hundred nineteen thousand, nine hundred thirty-eight".