77309384 has 16 divisors (see below), whose sum is σ = 145767600. Its totient is φ = 38438032.

The previous prime is 77309377. The next prime is 77309413. The reversal of 77309384 is 48390377.

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, 25562 + ... + 28425.

It is an arithmetic number, because the mean of its divisors is an integer number (9110475).

Almost surely, 2^77309384 is an apocalyptic number.

It is an amenable number.

77309384 is a deficient number, since it is larger than the sum of its proper divisors (68458216).

77309384 is a wasteful number, since it uses less digits than its factorization.

77309384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54172 (or 54168 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 41.

The square root of 77309384 is about 8792.5755043673. The cubic root of 77309384 is about 426.0011167655.

The spelling of 77309384 in words is "seventy-seven million, three hundred nine thousand, three hundred eighty-four".