9393990 has 16 divisors (see below), whose sum is σ = 22545648. Its totient is φ = 2505056.

The previous prime is 9393977. The next prime is 9393991. The reversal of 9393990 is 993939.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9393991) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 156537 + ... + 156596.

It is an arithmetic number, because the mean of its divisors is an integer number (1409103).

Almost surely, 2^9393990 is an apocalyptic number.

9393990 is an abundant number, since it is smaller than the sum of its proper divisors (13151658).

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

9393990 is a wasteful number, since it uses less digits than its factorization.

9393990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313143.

The product of its (nonzero) digits is 59049, while the sum is 42.

The square root of 9393990 is about 3064.9616637080. The cubic root of 9393990 is about 211.0004417382. Note that the first 3 decimals are identical.

The spelling of 9393990 in words is "nine million, three hundred ninety-three thousand, nine hundred ninety".