9903449 has 4 divisors (see below), whose sum is σ = 9912036. Its totient is φ = 9894864.

The previous prime is 9903431. The next prime is 9903451. The reversal of 9903449 is 9443099.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 9211225 + 692224 = 3035^2 + 832^2 .

It is a cyclic number.

It is not a de Polignac number, because 9903449 - 2⁸ = 9903193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9903499) 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 3 ways as a sum of consecutive naturals, for example, 2234 + ... + 4979.

It is an arithmetic number, because the mean of its divisors is an integer number (2478009).

Almost surely, 2^9903449 is an apocalyptic number.

It is an amenable number.

9903449 is a deficient number, since it is larger than the sum of its proper divisors (8587).

9903449 is a wasteful number, since it uses less digits than its factorization.

9903449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8586.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 9903449 is about 3146.9745788614. The cubic root of 9903449 is about 214.7478493381.

The spelling of 9903449 in words is "nine million, nine hundred three thousand, four hundred forty-nine".