9992491 has 2 divisors, whose sum is σ = 9992492. Its totient is φ = 9992490.

The previous prime is 9992483. The next prime is 9992497. The reversal of 9992491 is 1942999.

9992491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9992491 - 2³ = 9992483 is a prime.

It is not a weakly prime, because it can be changed into another prime (9992497) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4996245 + 4996246.

It is an arithmetic number, because the mean of its divisors is an integer number (4996246).

Almost surely, 2^9992491 is an apocalyptic number.

9992491 is a deficient number, since it is larger than the sum of its proper divisors (1).

9992491 is an equidigital number, since it uses as much as digits as its factorization.

9992491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52488, while the sum is 43.

The square root of 9992491 is about 3161.0901600555. The cubic root of 9992491 is about 215.3895299997.

The spelling of 9992491 in words is "nine million, nine hundred ninety-two thousand, four hundred ninety-one".