984645247 has 2 divisors, whose sum is σ = 984645248. Its totient is φ = 984645246.

The previous prime is 984645239. The next prime is 984645257. The reversal of 984645247 is 742546489.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 984645247 - 2³ = 984645239 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 984645247.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (984645257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492322623 + 492322624.

It is an arithmetic number, because the mean of its divisors is an integer number (492322624).

Almost surely, 2^984645247 is an apocalyptic number.

984645247 is a deficient number, since it is larger than the sum of its proper divisors (1).

984645247 is an equidigital number, since it uses as much as digits as its factorization.

984645247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1935360, while the sum is 49.

The square root of 984645247 is about 31379.0574587574. The cubic root of 984645247 is about 994.8553267261.

The spelling of 984645247 in words is "nine hundred eighty-four million, six hundred forty-five thousand, two hundred forty-seven".