84494779192 has 8 divisors (see below), whose sum is σ = 158427711000. Its totient is φ = 42247389592.

The previous prime is 84494779139. The next prime is 84494779231. The reversal of 84494779192 is 29197749448.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5280923692 + ... + 5280923707.

It is an arithmetic number, because the mean of its divisors is an integer number (19803463875).

Almost surely, 2^84494779192 is an apocalyptic number.

It is an amenable number.

84494779192 is a deficient number, since it is larger than the sum of its proper divisors (73932931808).

84494779192 is a wasteful number, since it uses less digits than its factorization.

84494779192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10561847405 (or 10561847401 counting only the distinct ones).

The product of its digits is 36578304, while the sum is 64.

The spelling of 84494779192 in words is "eighty-four billion, four hundred ninety-four million, seven hundred seventy-nine thousand, one hundred ninety-two".