9989390 has 16 divisors (see below), whose sum is σ = 18083520. Its totient is φ = 3972960.

The previous prime is 9989389. The next prime is 9989411. The reversal of 9989390 is 939899.

It is a happy number.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 950 + ... + 4569.

It is an arithmetic number, because the mean of its divisors is an integer number (1130220).

Almost surely, 2^9989390 is an apocalyptic number.

9989390 is a deficient number, since it is larger than the sum of its proper divisors (8094130).

9989390 is a wasteful number, since it uses less digits than its factorization.

9989390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5707.

The product of its (nonzero) digits is 157464, while the sum is 47.

The square root of 9989390 is about 3160.5996266531. The cubic root of 9989390 is about 215.3672468661.

The spelling of 9989390 in words is "nine million, nine hundred eighty-nine thousand, three hundred ninety".