8946991 has 2 divisors, whose sum is σ = 8946992. Its totient is φ = 8946990.

The previous prime is 8946919. The next prime is 8947009. The reversal of 8946991 is 1996498.

Together with previous prime (8946919) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8946991 - 2¹³ = 8938799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8946911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4473495 + 4473496.

It is an arithmetic number, because the mean of its divisors is an integer number (4473496).

Almost surely, 2^8946991 is an apocalyptic number.

8946991 is a deficient number, since it is larger than the sum of its proper divisors (1).

8946991 is an equidigital number, since it uses as much as digits as its factorization.

8946991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139968, while the sum is 46.

The square root of 8946991 is about 2991.1521191675. The cubic root of 8946991 is about 207.5991958097.

The spelling of 8946991 in words is "eight million, nine hundred forty-six thousand, nine hundred ninety-one".