77394918 has 8 divisors (see below), whose sum is σ = 154789848. Its totient is φ = 25798304.

The previous prime is 77394917. The next prime is 77394949. The reversal of 77394918 is 81949377.

It is a sphenic number, since it is the product of 3 distinct primes.

77394918 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77394917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6449571 + ... + 6449582.

It is an arithmetic number, because the mean of its divisors is an integer number (19348731).

Almost surely, 2^77394918 is an apocalyptic number.

77394918 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

77394918 is a wasteful number, since it uses less digits than its factorization.

77394918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12899158.

The product of its digits is 381024, while the sum is 48.

The square root of 77394918 is about 8797.4381498252. The cubic root of 77394918 is about 426.1581660476.

The spelling of 77394918 in words is "seventy-seven million, three hundred ninety-four thousand, nine hundred eighteen".