984252491 has 2 divisors, whose sum is σ = 984252492. Its totient is φ = 984252490.

The previous prime is 984252473. The next prime is 984252523. The reversal of 984252491 is 194252489.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 984252491 - 2²² = 980058187 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (984252391) 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, 492126245 + 492126246.

It is an arithmetic number, because the mean of its divisors is an integer number (492126246).

Almost surely, 2^984252491 is an apocalyptic number.

984252491 is a deficient number, since it is larger than the sum of its proper divisors (1).

984252491 is an equidigital number, since it uses as much as digits as its factorization.

984252491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 44.

The square root of 984252491 is about 31372.7985841238. The cubic root of 984252491 is about 994.7230329334.

The spelling of 984252491 in words is "nine hundred eighty-four million, two hundred fifty-two thousand, four hundred ninety-one".