9945576340 has 96 divisors (see below), whose sum is σ = 24363569664. Its totient is φ = 3339947520.

The previous prime is 9945576337. The next prime is 9945576359. The reversal of 9945576340 is 436755499.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1557394 + ... + 1563766.

It is an arithmetic number, because the mean of its divisors is an integer number (253787184).

Almost surely, 2^9945576340 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9945576340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12181784832).

9945576340 is an abundant number, since it is smaller than the sum of its proper divisors (14417993324).

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

9945576340 is a wasteful number, since it uses less digits than its factorization.

9945576340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6617 (or 6615 counting only the distinct ones).

The product of its (nonzero) digits is 4082400, while the sum is 52.

The square root of 9945576340 is about 99727.5104472181. The cubic root of 9945576340 is about 2150.5191708194.

The spelling of 9945576340 in words is "nine billion, nine hundred forty-five million, five hundred seventy-six thousand, three hundred forty".