9874691 has 2 divisors, whose sum is σ = 9874692. Its totient is φ = 9874690.

The previous prime is 9874681. The next prime is 9874693. The reversal of 9874691 is 1964789.

It is a strong prime.

It is an emirp because it is prime and its reverse (1964789) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9874691 is a prime.

Together with 9874693, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9874693) 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 as a sum of consecutive naturals, namely, 4937345 + 4937346.

It is an arithmetic number, because the mean of its divisors is an integer number (4937346).

Almost surely, 2^9874691 is an apocalyptic number.

9874691 is a deficient number, since it is larger than the sum of its proper divisors (1).

9874691 is an equidigital number, since it uses as much as digits as its factorization.

9874691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 44.

The square root of 9874691 is about 3142.4021066694. The cubic root of 9874691 is about 214.5397835732.

The spelling of 9874691 in words is "nine million, eight hundred seventy-four thousand, six hundred ninety-one".