9390420 has 72 divisors (see below), whose sum is σ = 30683016. Its totient is φ = 2310912.

The previous prime is 9390419. The next prime is 9390431. The reversal of 9390420 is 240939.

It can be written as a sum of positive squares in 4 ways, for example, as 887364 + 8503056 = 942^2 + 2916^2 .

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

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 23 ways as a sum of consecutive naturals, for example, 334 + ... + 4346.

It is an arithmetic number, because the mean of its divisors is an integer number (426153).

Almost surely, 2^9390420 is an apocalyptic number.

9390420 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9390420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15341508).

9390420 is an abundant number, since it is smaller than the sum of its proper divisors (21292596).

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

9390420 is a wasteful number, since it uses less digits than its factorization.

9390420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4041 (or 4036 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 9390420 is about 3064.3792193526. The cubic root of 9390420 is about 210.9737095041.

The spelling of 9390420 in words is "nine million, three hundred ninety thousand, four hundred twenty".