84397332906 has 24 divisors (see below), whose sum is σ = 182936638404. Its totient is φ = 28120790400.

The previous prime is 84397332893. The next prime is 84397332953. The reversal of 84397332906 is 60923379348.

It can be written as a sum of positive squares in 2 ways, for example, as 63360441225 + 21036891681 = 251715^2 + 145041^2 .

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 926445 + ... + 1013456.

Almost surely, 2^84397332906 is an apocalyptic number.

84397332906 is an abundant number, since it is smaller than the sum of its proper divisors (98539305498).

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

84397332906 is a wasteful number, since it uses less digits than its factorization.

84397332906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1942326 (or 1942323 counting only the distinct ones).

The product of its (nonzero) digits is 5878656, while the sum is 54.

The spelling of 84397332906 in words is "eighty-four billion, three hundred ninety-seven million, three hundred thirty-two thousand, nine hundred six".