9069999840 has 768 divisors, whose sum is σ = 36787322880. Its totient is φ = 2066688000.

The previous prime is 9069999821. The next prime is 9069999859. The reversal of 9069999840 is 489999609.

It is an interprime number because it is at equal distance from previous prime (9069999821) and next prime (9069999859).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 69236575 + ... + 69236705.

It is an arithmetic number, because the mean of its divisors is an integer number (47900160).

Almost surely, 2^9069999840 is an apocalyptic number.

9069999840 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9069999840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18393661440).

9069999840 is an abundant number, since it is smaller than the sum of its proper divisors (27717323040).

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

9069999840 is a wasteful number, since it uses less digits than its factorization.

9069999840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244 (or 230 counting only the distinct ones).

The product of its (nonzero) digits is 11337408, while the sum is 63.

The square root of 9069999840 is about 95236.5467664594. The cubic root of 9069999840 is about 2085.4626994434.

The spelling of 9069999840 in words is "nine billion, sixty-nine million, nine hundred ninety-nine thousand, eight hundred forty".