9555997 has 4 divisors (see below), whose sum is σ = 10424736. Its totient is φ = 8687260.

The previous prime is 9555991. The next prime is 9556003. The reversal of 9555997 is 7995559.

It is a happy number.

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.

It is an interprime number because it is at equal distance from previous prime (9555991) and next prime (9556003).

It is a cyclic number.

It is not a de Polignac number, because 9555997 - 2⁷ = 9555869 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9555997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9555991) 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, 434353 + ... + 434374.

It is an arithmetic number, because the mean of its divisors is an integer number (2606184).

Almost surely, 2^9555997 is an apocalyptic number.

It is an amenable number.

9555997 is a deficient number, since it is larger than the sum of its proper divisors (868739).

9555997 is a wasteful number, since it uses less digits than its factorization.

9555997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 868738.

The product of its digits is 637875, while the sum is 49.

The square root of 9555997 is about 3091.2775676086. The cubic root of 9555997 is about 212.2064930621.

The spelling of 9555997 in words is "nine million, five hundred fifty-five thousand, nine hundred ninety-seven".