9378990 has 40 divisors (see below), whose sum is σ = 25221240. Its totient is φ = 2500848.

The previous prime is 9378983. The next prime is 9379001. The reversal of 9378990 is 998739.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4980 + ... + 6599.

It is an arithmetic number, because the mean of its divisors is an integer number (630531).

Almost surely, 2^9378990 is an apocalyptic number.

9378990 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

9378990 is an abundant number, since it is smaller than the sum of its proper divisors (15842250).

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

9378990 is a wasteful number, since it uses less digits than its factorization.

9378990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11598 (or 11589 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The square root of 9378990 is about 3062.5136734389. The cubic root of 9378990 is about 210.8880758279. Note that the first 3 decimals are identical.

The spelling of 9378990 in words is "nine million, three hundred seventy-eight thousand, nine hundred ninety".