9956009 has 4 divisors (see below), whose sum is σ = 11378304. Its totient is φ = 8533716.

The previous prime is 9956003. The next prime is 9956017. The reversal of 9956009 is 9006599.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9006599 = 7 ⋅1286657.

It is a cyclic number.

It is not a de Polignac number, because 9956009 - 2¹² = 9951913 is a prime.

It is a super-3 number, since 3×9956009³ (a number of 22 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (9956003) 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, 711137 + ... + 711150.

It is an arithmetic number, because the mean of its divisors is an integer number (2844576).

Almost surely, 2^9956009 is an apocalyptic number.

It is an amenable number.

9956009 is a deficient number, since it is larger than the sum of its proper divisors (1422295).

9956009 is a wasteful number, since it uses less digits than its factorization.

9956009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1422294.

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

The square root of 9956009 is about 3155.3144058873. The cubic root of 9956009 is about 215.1270854929.

The spelling of 9956009 in words is "nine million, nine hundred fifty-six thousand, nine".