998531029 has 2 divisors, whose sum is σ = 998531030. Its totient is φ = 998531028.

The previous prime is 998531003. The next prime is 998531041. The reversal of 998531029 is 920135899.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 880308900 + 118222129 = 29670^2 + 10873^2 .

It is a cyclic number.

It is not a de Polignac number, because 998531029 - 2¹¹ = 998528981 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 998531029.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (998531069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499265514 + 499265515.

It is an arithmetic number, because the mean of its divisors is an integer number (499265515).

Almost surely, 2^998531029 is an apocalyptic number.

It is an amenable number.

998531029 is a deficient number, since it is larger than the sum of its proper divisors (1).

998531029 is an equidigital number, since it uses as much as digits as its factorization.

998531029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 174960, while the sum is 46.

The square root of 998531029 is about 31599.5415947763. The cubic root of 998531029 is about 999.5101030402.

It can be divided in two parts, 9985 and 31029, that added together give a palindrome (41014).

The spelling of 998531029 in words is "nine hundred ninety-eight million, five hundred thirty-one thousand, twenty-nine".