9901903 has 8 divisors (see below), whose sum is σ = 11094480. Its totient is φ = 8758080.

The previous prime is 9901901. The next prime is 9901981. The reversal of 9901903 is 3091099.

9901903 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9901903 - 2¹ = 9901901 is a prime.

It is a Duffinian number.

9901903 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9901901) 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, 11758 + ... + 12571.

It is an arithmetic number, because the mean of its divisors is an integer number (1386810).

Almost surely, 2^9901903 is an apocalyptic number.

9901903 is a deficient number, since it is larger than the sum of its proper divisors (1192577).

9901903 is a wasteful number, since it uses less digits than its factorization.

9901903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24377.

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

The square root of 9901903 is about 3146.7289365308. The cubic root of 9901903 is about 214.7366741925.

The spelling of 9901903 in words is "nine million, nine hundred one thousand, nine hundred three".