7981097 has 4 divisors (see below), whose sum is σ = 8029056. Its totient is φ = 7933140.

The previous prime is 7981087. The next prime is 7981123. The reversal of 7981097 is 7901897.

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 a cyclic number.

It is not a de Polignac number, because 7981097 - 2⁶ = 7981033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7981037) 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 3 ways as a sum of consecutive naturals, for example, 23729 + ... + 24062.

It is an arithmetic number, because the mean of its divisors is an integer number (2007264).

Almost surely, 2^7981097 is an apocalyptic number.

It is an amenable number.

7981097 is a deficient number, since it is larger than the sum of its proper divisors (47959).

7981097 is a wasteful number, since it uses less digits than its factorization.

7981097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47958.

The product of its (nonzero) digits is 31752, while the sum is 41.

The square root of 7981097 is about 2825.0835385878. The cubic root of 7981097 is about 199.8423507662.

The spelling of 7981097 in words is "seven million, nine hundred eighty-one thousand, ninety-seven".