77949318 has 16 divisors (see below), whose sum is σ = 165069360. Its totient is φ = 24454656.

The previous prime is 77949317. The next prime is 77949331. The reversal of 77949318 is 81394977.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77949317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 382003 + ... + 382206.

It is an arithmetic number, because the mean of its divisors is an integer number (10316835).

Almost surely, 2^77949318 is an apocalyptic number.

77949318 is an abundant number, since it is smaller than the sum of its proper divisors (87120042).

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

77949318 is a wasteful number, since it uses less digits than its factorization.

77949318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764231.

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

The square root of 77949318 is about 8828.8910968479. The cubic root of 77949318 is about 427.1733067142.

The spelling of 77949318 in words is "seventy-seven million, nine hundred forty-nine thousand, three hundred eighteen".