77940914 has 12 divisors (see below), whose sum is σ = 117816894. Its totient is φ = 38670912.

The previous prime is 77940911. The next prime is 77940931. The reversal of 77940914 is 41904977.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 54272689 + 23668225 = 7367^2 + 4865^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (77940911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 37634 + ... + 39650.

Almost surely, 2^77940914 is an apocalyptic number.

77940914 is a deficient number, since it is larger than the sum of its proper divisors (39875980).

77940914 is a wasteful number, since it uses less digits than its factorization.

77940914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2297 (or 2158 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 77940914 is about 8828.4151465594. The cubic root of 77940914 is about 427.1579544589.

The spelling of 77940914 in words is "seventy-seven million, nine hundred forty thousand, nine hundred fourteen".