77839416 has 96 divisors (see below), whose sum is σ = 220521600. Its totient is φ = 24779520.

The previous prime is 77839381. The next prime is 77839441. The reversal of 77839416 is 61493877.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 162265 + ... + 162743.

It is an arithmetic number, because the mean of its divisors is an integer number (2297100).

Almost surely, 2^77839416 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77839416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110260800).

77839416 is an abundant number, since it is smaller than the sum of its proper divisors (142682184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77839416 is a wasteful number, since it uses less digits than its factorization.

77839416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589 (or 582 counting only the distinct ones).

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

The square root of 77839416 is about 8822.6649035311. The cubic root of 77839416 is about 426.9724527785.

The spelling of 77839416 in words is "seventy-seven million, eight hundred thirty-nine thousand, four hundred sixteen".