9926491 has 2 divisors, whose sum is σ = 9926492. Its totient is φ = 9926490.

The previous prime is 9926489. The next prime is 9926503. The reversal of 9926491 is 1946299.

It is a weak prime.

It is an emirp because it is prime and its reverse (1946299) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9926491 - 2¹ = 9926489 is a prime.

Together with 9926489, it forms a pair of twin primes.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (9926401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4963245 + 4963246.

It is an arithmetic number, because the mean of its divisors is an integer number (4963246).

Almost surely, 2^9926491 is an apocalyptic number.

9926491 is a deficient number, since it is larger than the sum of its proper divisors (1).

9926491 is an equidigital number, since it uses as much as digits as its factorization.

9926491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34992, while the sum is 40.

The square root of 9926491 is about 3150.6334283760. The cubic root of 9926491 is about 214.9142690464.

The spelling of 9926491 in words is "nine million, nine hundred twenty-six thousand, four hundred ninety-one".