9857975 has 6 divisors (see below), whose sum is σ = 12223920. Its totient is φ = 7886360.

The previous prime is 9857971. The next prime is 9857983. The reversal of 9857975 is 5797589.

It is not a de Polignac number, because 9857975 - 2² = 9857971 is a prime.

It is a super-2 number, since 2×9857975² = 194359342201250, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9857971) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 197135 + ... + 197184.

It is an arithmetic number, because the mean of its divisors is an integer number (2037320).

Almost surely, 2^9857975 is an apocalyptic number.

9857975 is a deficient number, since it is larger than the sum of its proper divisors (2365945).

9857975 is a wasteful number, since it uses less digits than its factorization.

9857975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394329 (or 394324 counting only the distinct ones).

The product of its digits is 793800, while the sum is 50.

The square root of 9857975 is about 3139.7412313756. The cubic root of 9857975 is about 214.4186566592.

The spelling of 9857975 in words is "nine million, eight hundred fifty-seven thousand, nine hundred seventy-five".