77822394 has 32 divisors (see below), whose sum is σ = 168673344. Its totient is φ = 23794560.

The previous prime is 77822321. The next prime is 77822417. The reversal of 77822394 is 49322877.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9654 + ... + 15774.

It is an arithmetic number, because the mean of its divisors is an integer number (5271042).

Almost surely, 2^77822394 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77822394, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84336672).

77822394 is an abundant number, since it is smaller than the sum of its proper divisors (90850950).

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

77822394 is a wasteful number, since it uses less digits than its factorization.

77822394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6302.

The product of its digits is 169344, while the sum is 42.

The square root of 77822394 is about 8821.7001762699. The cubic root of 77822394 is about 426.9413269243.

The spelling of 77822394 in words is "seventy-seven million, eight hundred twenty-two thousand, three hundred ninety-four".