77982194 has 8 divisors (see below), whose sum is σ = 123129840. Its totient is φ = 36938916.

The previous prime is 77982193. The next prime is 77982209. The reversal of 77982194 is 49128977.

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

It is not an unprimeable number, because it can be changed into a prime (77982193) 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, 1026044 + ... + 1026119.

It is an arithmetic number, because the mean of its divisors is an integer number (15391230).

Almost surely, 2^77982194 is an apocalyptic number.

77982194 is a deficient number, since it is larger than the sum of its proper divisors (45147646).

77982194 is a wasteful number, since it uses less digits than its factorization.

77982194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2052184.

The product of its digits is 254016, while the sum is 47.

The square root of 77982194 is about 8830.7527425469. The cubic root of 77982194 is about 427.2333533192.

The spelling of 77982194 in words is "seventy-seven million, nine hundred eighty-two thousand, one hundred ninety-four".