77839114 has 4 divisors (see below), whose sum is σ = 116758674. Its totient is φ = 38919556.

The previous prime is 77839081. The next prime is 77839117. The reversal of 77839114 is 41193877.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 60575089 + 17264025 = 7783^2 + 4155^2 .

It is not an unprimeable number, because it can be changed into a prime (77839117) by changing a digit.

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 as a sum of consecutive naturals, namely, 19459777 + ... + 19459780.

Almost surely, 2^77839114 is an apocalyptic number.

77839114 is a deficient number, since it is larger than the sum of its proper divisors (38919560).

77839114 is a wasteful number, since it uses less digits than its factorization.

77839114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38919559.

The product of its digits is 42336, while the sum is 40.

The square root of 77839114 is about 8822.6477885043. The cubic root of 77839114 is about 426.9719005910.

The spelling of 77839114 in words is "seventy-seven million, eight hundred thirty-nine thousand, one hundred fourteen".