980790491 has 2 divisors, whose sum is σ = 980790492. Its totient is φ = 980790490.

The previous prime is 980790467. The next prime is 980790523. The reversal of 980790491 is 194097089.

It is a weak prime.

It is an emirp because it is prime and its reverse (194097089) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 980790491 - 2⁶ = 980790427 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (980790691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490395245 + 490395246.

It is an arithmetic number, because the mean of its divisors is an integer number (490395246).

Almost surely, 2^980790491 is an apocalyptic number.

980790491 is a deficient number, since it is larger than the sum of its proper divisors (1).

980790491 is an equidigital number, since it uses as much as digits as its factorization.

980790491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 47.

The square root of 980790491 is about 31317.5747943547. The cubic root of 980790491 is about 993.5553865118. Note that the first 3 decimals are identical.

The spelling of 980790491 in words is "nine hundred eighty million, seven hundred ninety thousand, four hundred ninety-one".