9907220 has 12 divisors (see below), whose sum is σ = 20805204. Its totient is φ = 3962880.

The previous prime is 9907211. The next prime is 9907229. The reversal of 9907220 is 227099.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (9907211) and next prime (9907229).

It can be written as a sum of positive squares in 2 ways, for example, as 4468996 + 5438224 = 2114^2 + 2332^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9907229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 247661 + ... + 247700.

It is an arithmetic number, because the mean of its divisors is an integer number (1733767).

Almost surely, 2^9907220 is an apocalyptic number.

It is an amenable number.

9907220 is an abundant number, since it is smaller than the sum of its proper divisors (10897984).

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

9907220 is a wasteful number, since it uses less digits than its factorization.

9907220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495370 (or 495368 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 9907220 is about 3147.5736687169. The cubic root of 9907220 is about 214.7751028527.

The spelling of 9907220 in words is "nine million, nine hundred seven thousand, two hundred twenty".