9774491 has 2 divisors, whose sum is σ = 9774492. Its totient is φ = 9774490.

The previous prime is 9774469. The next prime is 9774497. The reversal of 9774491 is 1944779.

It is a happy number.

9774491 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 an emirp because it is prime and its reverse (1944779) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9774491 - 2¹⁴ = 9758107 is a prime.

It is not a weakly prime, because it can be changed into another prime (9774497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4887245 + 4887246.

It is an arithmetic number, because the mean of its divisors is an integer number (4887246).

Almost surely, 2^9774491 is an apocalyptic number.

9774491 is a deficient number, since it is larger than the sum of its proper divisors (1).

9774491 is an equidigital number, since it uses as much as digits as its factorization.

9774491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63504, while the sum is 41.

The square root of 9774491 is about 3126.4182381761. The cubic root of 9774491 is about 213.8116591951.

The spelling of 9774491 in words is "nine million, seven hundred seventy-four thousand, four hundred ninety-one".