608420989447 has 2 divisors, whose sum is σ = 608420989448. Its totient is φ = 608420989446.

The previous prime is 608420989417. The next prime is 608420989457. The reversal of 608420989447 is 744989024806.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-608420989447 is a prime.

It is a super-2 number, since 2×608420989447² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (608420989417) 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, 304210494723 + 304210494724.

It is an arithmetic number, because the mean of its divisors is an integer number (304210494724).

Almost surely, 2^608420989447 is an apocalyptic number.

608420989447 is a deficient number, since it is larger than the sum of its proper divisors (1).

608420989447 is an equidigital number, since it uses as much as digits as its factorization.

608420989447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27869184, while the sum is 61.

The spelling of 608420989447 in words is "six hundred eight billion, four hundred twenty million, nine hundred eighty-nine thousand, four hundred forty-seven".