9949906 has 4 divisors (see below), whose sum is σ = 14924862. Its totient is φ = 4974952.

The previous prime is 9949889. The next prime is 9949909. The reversal of 9949906 is 6099499.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 9579025 + 370881 = 3095^2 + 609^2 .

It is not an unprimeable number, because it can be changed into a prime (9949909) 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 as a sum of consecutive naturals, namely, 2487475 + ... + 2487478.

Almost surely, 2^9949906 is an apocalyptic number.

9949906 is a deficient number, since it is larger than the sum of its proper divisors (4974956).

9949906 is a wasteful number, since it uses less digits than its factorization.

9949906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4974955.

The product of its (nonzero) digits is 157464, while the sum is 46.

The square root of 9949906 is about 3154.3471590806. The cubic root of 9949906 is about 215.0831191149.

It can be divided in two parts, 99 and 49906, that added together give a palindrome (50005).

The spelling of 9949906 in words is "nine million, nine hundred forty-nine thousand, nine hundred six".