998839741 has 2 divisors, whose sum is σ = 998839742. Its totient is φ = 998839740.

The previous prime is 998839729. The next prime is 998839799. The reversal of 998839741 is 147938899.

It is a happy number.

It is an a-pointer prime, because the next prime (998839799) can be obtained adding 998839741 to its sum of digits (58).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 890783716 + 108056025 = 29846^2 + 10395^2 .

It is an emirp because it is prime and its reverse (147938899) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 998839741 - 2⁹ = 998839229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (998809741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499419870 + 499419871.

It is an arithmetic number, because the mean of its divisors is an integer number (499419871).

Almost surely, 2^998839741 is an apocalyptic number.

It is an amenable number.

998839741 is a deficient number, since it is larger than the sum of its proper divisors (1).

998839741 is an equidigital number, since it uses as much as digits as its factorization.

998839741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3919104, while the sum is 58.

The square root of 998839741 is about 31604.4259716895. The cubic root of 998839741 is about 999.6130973256.

It can be divided in two parts, 9988 and 39741, that added together give a square (49729 = 223²).

The spelling of 998839741 in words is "nine hundred ninety-eight million, eight hundred thirty-nine thousand, seven hundred forty-one".