84709009892 has 96 divisors (see below), whose sum is σ = 167498150400. Its totient is φ = 37230336000.

The previous prime is 84709009871. The next prime is 84709009897. The reversal of 84709009892 is 29890090748.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (84709009897) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 14987267 + ... + 14992917.

It is an arithmetic number, because the mean of its divisors is an integer number (1744772400).

Almost surely, 2^84709009892 is an apocalyptic number.

84709009892 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

It is an amenable number.

84709009892 is a deficient number, since it is larger than the sum of its proper divisors (82789140508).

84709009892 is a wasteful number, since it uses less digits than its factorization.

84709009892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5877 (or 5875 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 56.

The spelling of 84709009892 in words is "eighty-four billion, seven hundred nine million, nine thousand, eight hundred ninety-two".