9749491 has 2 divisors, whose sum is σ = 9749492. Its totient is φ = 9749490.

The previous prime is 9749479. The next prime is 9749497. The reversal of 9749491 is 1949479.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9749491 is a prime.

It is a super-3 number, since 3×9749491³ (a number of 22 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (9749497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4874745 + 4874746.

It is an arithmetic number, because the mean of its divisors is an integer number (4874746).

Almost surely, 2^9749491 is an apocalyptic number.

9749491 is a deficient number, since it is larger than the sum of its proper divisors (1).

9749491 is an equidigital number, since it uses as much as digits as its factorization.

9749491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 43.

The square root of 9749491 is about 3122.4174929051. The cubic root of 9749491 is about 213.6292164420.

The spelling of 9749491 in words is "nine million, seven hundred forty-nine thousand, four hundred ninety-one".