9956906 has 4 divisors (see below), whose sum is σ = 14935362. Its totient is φ = 4978452.

The previous prime is 9956897. The next prime is 9956909. The reversal of 9956906 is 6096599.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6096599 = 83 ⋅73453.

It can be written as a sum of positive squares in only one way, i.e., 7425625 + 2531281 = 2725^2 + 1591^2 .

It is not an unprimeable number, because it can be changed into a prime (9956909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2489225 + ... + 2489228.

Almost surely, 2^9956906 is an apocalyptic number.

9956906 is a deficient number, since it is larger than the sum of its proper divisors (4978456).

9956906 is a wasteful number, since it uses less digits than its factorization.

9956906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4978455.

The product of its (nonzero) digits is 131220, while the sum is 44.

The square root of 9956906 is about 3155.4565438301. The cubic root of 9956906 is about 215.1335460201.

The spelling of 9956906 in words is "nine million, nine hundred fifty-six thousand, nine hundred six".