93890816009 has 4 divisors (see below), whose sum is σ = 99413805204. Its totient is φ = 88367826816.

The previous prime is 93890815943. The next prime is 93890816011. The reversal of 93890816009 is 90061809839.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90061809839 = 67 ⋅1344206117.

It can be written as a sum of positive squares in 2 ways, for example, as 35484010384 + 58406805625 = 188372^2 + 241675^2 .

It is a cyclic number.

It is not a de Polignac number, because 93890816009 - 2³⁶ = 25171339273 is a prime.

It is a super-3 number, since 3×93890816009³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (93890816059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2761494572 + ... + 2761494605.

It is an arithmetic number, because the mean of its divisors is an integer number (24853451301).

Almost surely, 2^93890816009 is an apocalyptic number.

It is an amenable number.

93890816009 is a deficient number, since it is larger than the sum of its proper divisors (5522989195).

93890816009 is a wasteful number, since it uses less digits than its factorization.

93890816009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5522989194.

The product of its (nonzero) digits is 839808, while the sum is 53.

The spelling of 93890816009 in words is "ninety-three billion, eight hundred ninety million, eight hundred sixteen thousand, nine".