84394090165 has 64 divisors (see below), whose sum is σ = 134743523328. Its totient is φ = 49124275200.

The previous prime is 84394090139. The next prime is 84394090169. The reversal of 84394090165 is 56109049348.

It is a happy number.

It is not a de Polignac number, because 84394090165 - 2⁷ = 84394090037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84394090169) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 780450 + ... + 881980.

It is an arithmetic number, because the mean of its divisors is an integer number (2105367552).

Almost surely, 2^84394090165 is an apocalyptic number.

84394090165 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

84394090165 is a deficient number, since it is larger than the sum of its proper divisors (50349433163).

84394090165 is a wasteful number, since it uses less digits than its factorization.

84394090165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101698.

The product of its (nonzero) digits is 933120, while the sum is 49.

The spelling of 84394090165 in words is "eighty-four billion, three hundred ninety-four million, ninety thousand, one hundred sixty-five".