9901390 has 16 divisors (see below), whose sum is σ = 17997408. Its totient is φ = 3921696.

The previous prime is 9901379. The next prime is 9901391. The reversal of 9901390 is 931099.

9901390 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9901391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3777 + ... + 5836.

It is an arithmetic number, because the mean of its divisors is an integer number (1124838).

Almost surely, 2^9901390 is an apocalyptic number.

9901390 is a deficient number, since it is larger than the sum of its proper divisors (8096018).

9901390 is a wasteful number, since it uses less digits than its factorization.

9901390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9723.

The product of its (nonzero) digits is 2187, while the sum is 31.

The square root of 9901390 is about 3146.6474222575. The cubic root of 9901390 is about 214.7329657533.

The spelling of 9901390 in words is "nine million, nine hundred one thousand, three hundred ninety".