9949951 has 6 divisors (see below), whose sum is σ = 10936856. Its totient is φ = 9045300.

The previous prime is 9949943. The next prime is 9949963. The reversal of 9949951 is 1599499.

9949951 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9949951 - 2³ = 9949943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9949931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40995 + ... + 41236.

Almost surely, 2^9949951 is an apocalyptic number.

9949951 is a deficient number, since it is larger than the sum of its proper divisors (986905).

9949951 is a wasteful number, since it uses less digits than its factorization.

9949951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82253 (or 82242 counting only the distinct ones).

The product of its digits is 131220, while the sum is 46.

The square root of 9949951 is about 3154.3542920858. The cubic root of 9949951 is about 215.0834433634.

The spelling of 9949951 in words is "nine million, nine hundred forty-nine thousand, nine hundred fifty-one".