998860069 has 2 divisors, whose sum is σ = 998860070. Its totient is φ = 998860068.

The previous prime is 998860063. The next prime is 998860127. The reversal of 998860069 is 960068899.

998860069 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 672624225 + 326235844 = 25935^2 + 18062^2 .

It is a cyclic number.

It is not a de Polignac number, because 998860069 - 2¹⁹ = 998335781 is a prime.

It is a super-2 number, since 2×998860069² = 1995442874885369522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (998860063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499430034 + 499430035.

It is an arithmetic number, because the mean of its divisors is an integer number (499430035).

Almost surely, 2^998860069 is an apocalyptic number.

It is an amenable number.

998860069 is a deficient number, since it is larger than the sum of its proper divisors (1).

998860069 is an equidigital number, since it uses as much as digits as its factorization.

998860069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1679616, while the sum is 55.

The square root of 998860069 is about 31604.7475705787. The cubic root of 998860069 is about 999.6198785260.

The spelling of 998860069 in words is "nine hundred ninety-eight million, eight hundred sixty thousand, sixty-nine".