998009039 has 2 divisors, whose sum is σ = 998009040. Its totient is φ = 998009038.

The previous prime is 998009017. The next prime is 998009057. The reversal of 998009039 is 930900899.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-998009039 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 998008984 and 998009002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (998009069) 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, 499004519 + 499004520.

It is an arithmetic number, because the mean of its divisors is an integer number (499004520).

Almost surely, 2^998009039 is an apocalyptic number.

998009039 is a deficient number, since it is larger than the sum of its proper divisors (1).

998009039 is an equidigital number, since it uses as much as digits as its factorization.

998009039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 157464, while the sum is 47.

The square root of 998009039 is about 31591.2810598114. The cubic root of 998009039 is about 999.3359054093.

The spelling of 998009039 in words is "nine hundred ninety-eight million, nine thousand, thirty-nine".