998739583 has 2 divisors, whose sum is σ = 998739584. Its totient is φ = 998739582.

The previous prime is 998739527. The next prime is 998739601. The reversal of 998739583 is 385937899.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 998739583 - 2¹⁷ = 998608511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (998739523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499369791 + 499369792.

It is an arithmetic number, because the mean of its divisors is an integer number (499369792).

Almost surely, 2^998739583 is an apocalyptic number.

998739583 is a deficient number, since it is larger than the sum of its proper divisors (1).

998739583 is an equidigital number, since it uses as much as digits as its factorization.

998739583 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14696640, while the sum is 61.

The square root of 998739583 is about 31602.8413754207. The cubic root of 998739583 is about 999.5796843595.

The spelling of 998739583 in words is "nine hundred ninety-eight million, seven hundred thirty-nine thousand, five hundred eighty-three".