9990389398 has 8 divisors (see below), whose sum is σ = 16347909960. Its totient is φ = 4541086080.

The previous prime is 9990389393. The next prime is 9990389407. The reversal of 9990389398 is 8939830999.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9990389393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 227054283 + ... + 227054326.

It is an arithmetic number, because the mean of its divisors is an integer number (2043488745).

Almost surely, 2^9990389398 is an apocalyptic number.

9990389398 is a deficient number, since it is larger than the sum of its proper divisors (6357520562).

9990389398 is a wasteful number, since it uses less digits than its factorization.

9990389398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454108622.

The product of its (nonzero) digits is 34012224, while the sum is 67.

The square root of 9990389398 is about 99951.9354389899. The cubic root of 9990389398 is about 2153.7442883341.

The spelling of 9990389398 in words is "nine billion, nine hundred ninety million, three hundred eighty-nine thousand, three hundred ninety-eight".