7974289 has 2 divisors, whose sum is σ = 7974290. Its totient is φ = 7974288.

The previous prime is 7974287. The next prime is 7974293. The reversal of 7974289 is 9824797.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5602689 + 2371600 = 2367^2 + 1540^2 .

It is an emirp because it is prime and its reverse (9824797) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7974289 - 2¹ = 7974287 is a prime.

Together with 7974287, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (7974287) 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, 3987144 + 3987145.

It is an arithmetic number, because the mean of its divisors is an integer number (3987145).

Almost surely, 2^7974289 is an apocalyptic number.

It is an amenable number.

7974289 is a deficient number, since it is larger than the sum of its proper divisors (1).

7974289 is an equidigital number, since it uses as much as digits as its factorization.

7974289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 254016, while the sum is 46.

The square root of 7974289 is about 2823.8783614030. The cubic root of 7974289 is about 199.7855117228.

The spelling of 7974289 in words is "seven million, nine hundred seventy-four thousand, two hundred eighty-nine".