9975847 has 4 divisors (see below), whose sum is σ = 11400976. Its totient is φ = 8550720.

The previous prime is 9975841. The next prime is 9975851. The reversal of 9975847 is 7485799.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7485799 = 29 ⋅258131.

It is a cyclic number.

It is not a de Polignac number, because 9975847 - 2³ = 9975839 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 9975847.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9975841) 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, 712554 + ... + 712567.

It is an arithmetic number, because the mean of its divisors is an integer number (2850244).

Almost surely, 2^9975847 is an apocalyptic number.

9975847 is a deficient number, since it is larger than the sum of its proper divisors (1425129).

9975847 is a wasteful number, since it uses less digits than its factorization.

9975847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1425128.

The product of its digits is 635040, while the sum is 49.

The square root of 9975847 is about 3158.4564268009. The cubic root of 9975847 is about 215.2698756312.

The spelling of 9975847 in words is "nine million, nine hundred seventy-five thousand, eight hundred forty-seven".