9909506 has 8 divisors (see below), whose sum is σ = 14907900. Its totient is φ = 4940208.

The previous prime is 9909499. The next prime is 9909509. The reversal of 9909506 is 6059099.

It can be written as a sum of positive squares in 2 ways, for example, as 7924225 + 1985281 = 2815^2 + 1409^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 9909506.

It is not an unprimeable number, because it can be changed into a prime (9909509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6401 + ... + 7796.

Almost surely, 2^9909506 is an apocalyptic number.

9909506 is a deficient number, since it is larger than the sum of its proper divisors (4998394).

9909506 is a wasteful number, since it uses less digits than its factorization.

9909506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14548.

The product of its (nonzero) digits is 21870, while the sum is 38.

The square root of 9909506 is about 3147.9367846258. The cubic root of 9909506 is about 214.7916207096.

The spelling of 9909506 in words is "nine million, nine hundred nine thousand, five hundred six".