77986334 has 4 divisors (see below), whose sum is σ = 116979504. Its totient is φ = 38993166.

The previous prime is 77986319. The next prime is 77986357. The reversal of 77986334 is 43368977.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43368977 = 983 ⋅44119.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19496582 + ... + 19496585.

It is an arithmetic number, because the mean of its divisors is an integer number (29244876).

Almost surely, 2^77986334 is an apocalyptic number.

77986334 is a deficient number, since it is larger than the sum of its proper divisors (38993170).

77986334 is a wasteful number, since it uses less digits than its factorization.

77986334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38993169.

The product of its digits is 762048, while the sum is 47.

The square root of 77986334 is about 8830.9871475391. The cubic root of 77986334 is about 427.2409136553.

The spelling of 77986334 in words is "seventy-seven million, nine hundred eighty-six thousand, three hundred thirty-four".