84393931122 has 18 divisors (see below), whose sum is σ = 182856187917. Its totient is φ = 28130899536.

The previous prime is 84393931117. The next prime is 84393931157. The reversal of 84393931122 is 22113939348.

84393931122 is a `hidden beast` number, since 8 + 439 + 3 + 93 + 1 + 122 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 68147624601 + 16246306521 = 261051^2 + 127461^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=205419.

It is a super-2 number, since 2×84393931122² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1198278 + ... + 1266750.

Almost surely, 2^84393931122 is an apocalyptic number.

84393931122 is an abundant number, since it is smaller than the sum of its proper divisors (98462256795).

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

84393931122 is an frugal number, since it uses more digits than its factorization.

84393931122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136954 (or 68478 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The spelling of 84393931122 in words is "eighty-four billion, three hundred ninety-three million, nine hundred thirty-one thousand, one hundred twenty-two".