9990389468 has 96 divisors (see below), whose sum is σ = 19357040640. Its totient is φ = 4493905920.

The previous prime is 9990389467. The next prime is 9990389483. The reversal of 9990389468 is 8649830999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9990389467) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51763580 + ... + 51763772.

It is an arithmetic number, because the mean of its divisors is an integer number (201635840).

Almost surely, 2^9990389468 is an apocalyptic number.

It is an amenable number.

9990389468 is a deficient number, since it is larger than the sum of its proper divisors (9366651172).

9990389468 is a wasteful number, since it uses less digits than its factorization.

9990389468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547 (or 545 counting only the distinct ones).

The product of its (nonzero) digits is 30233088, while the sum is 65.

The square root of 9990389468 is about 99951.9357891582. The cubic root of 9990389468 is about 2153.7442933643.

The spelling of 9990389468 in words is "nine billion, nine hundred ninety million, three hundred eighty-nine thousand, four hundred sixty-eight".