9906351 has 32 divisors (see below), whose sum is σ = 16439808. Its totient is φ = 5166720.

The previous prime is 9906349. The next prime is 9906361. The reversal of 9906351 is 1536099.

It is not a de Polignac number, because 9906351 - 2¹ = 9906349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9906361) 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 31 ways as a sum of consecutive naturals, for example, 35625 + ... + 35901.

It is an arithmetic number, because the mean of its divisors is an integer number (513744).

Almost surely, 2^9906351 is an apocalyptic number.

9906351 is a gapful number since it is divisible by the number (91) formed by its first and last digit.

9906351 is a deficient number, since it is larger than the sum of its proper divisors (6533457).

9906351 is a wasteful number, since it uses less digits than its factorization.

9906351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431.

The product of its (nonzero) digits is 7290, while the sum is 33.

The square root of 9906351 is about 3147.4356228524. The cubic root of 9906351 is about 214.7688230883.

The spelling of 9906351 in words is "nine million, nine hundred six thousand, three hundred fifty-one".