9379889640 has 512 divisors, whose sum is σ = 35383910400. Its totient is φ = 2190689280.

The previous prime is 9379889633. The next prime is 9379889671. The reversal of 9379889640 is 469889739.

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, 59744442 + ... + 59744598.

It is an arithmetic number, because the mean of its divisors is an integer number (69109200).

Almost surely, 2^9379889640 is an apocalyptic number.

9379889640 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 9379889640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17691955200).

9379889640 is an abundant number, since it is smaller than the sum of its proper divisors (26004020760).

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

9379889640 is a wasteful number, since it uses less digits than its factorization.

9379889640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342 (or 332 counting only the distinct ones).

The product of its (nonzero) digits is 23514624, while the sum is 63.

The square root of 9379889640 is about 96849.8303560724. The cubic root of 9379889640 is about 2108.9481846159.

The spelling of 9379889640 in words is "nine billion, three hundred seventy-nine million, eight hundred eighty-nine thousand, six hundred forty".