9981097 has 8 divisors (see below), whose sum is σ = 11552000. Its totient is φ = 8446464.

The previous prime is 9981079. The next prime is 9981121. The reversal of 9981097 is 7901899.

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 9981097 - 2⁷ = 9980969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9981197) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8472 + ... + 9577.

It is an arithmetic number, because the mean of its divisors is an integer number (1444000).

Almost surely, 2^9981097 is an apocalyptic number.

It is an amenable number.

9981097 is a deficient number, since it is larger than the sum of its proper divisors (1570903).

9981097 is a wasteful number, since it uses less digits than its factorization.

9981097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18135.

The product of its (nonzero) digits is 40824, while the sum is 43.

The square root of 9981097 is about 3159.2874196565. The cubic root of 9981097 is about 215.3076324468.

The spelling of 9981097 in words is "nine million, nine hundred eighty-one thousand, ninety-seven".