9143897 has 8 divisors (see below), whose sum is σ = 10672896. Its totient is φ = 7670592.

The previous prime is 9143891. The next prime is 9143917. The reversal of 9143897 is 7983419.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 9143897 - 2⁴ = 9143881 is a prime.

It is a super-2 number, since 2×9143897² = 167221704693218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9143891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13568 + ... + 14225.

It is an arithmetic number, because the mean of its divisors is an integer number (1334112).

Almost surely, 2^9143897 is an apocalyptic number.

It is an amenable number.

9143897 is a deficient number, since it is larger than the sum of its proper divisors (1528999).

9143897 is a wasteful number, since it uses less digits than its factorization.

9143897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27847.

The product of its digits is 54432, while the sum is 41.

The square root of 9143897 is about 3023.8877293974. The cubic root of 9143897 is about 209.1111105360. Note that the first 5 decimals are identical.

The spelling of 9143897 in words is "nine million, one hundred forty-three thousand, eight hundred ninety-seven".