989705063 has 2 divisors, whose sum is σ = 989705064. Its totient is φ = 989705062.

The previous prime is 989705029. The next prime is 989705077. The reversal of 989705063 is 360507989.

It is a strong prime.

It is an emirp because it is prime and its reverse (360507989) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 989705063 - 2¹⁶ = 989639527 is a prime.

It is a super-2 number, since 2×989705063² = 1959032223455667938, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 989704999 and 989705017.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (989705023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494852531 + 494852532.

It is an arithmetic number, because the mean of its divisors is an integer number (494852532).

Almost surely, 2^989705063 is an apocalyptic number.

989705063 is a deficient number, since it is larger than the sum of its proper divisors (1).

989705063 is an equidigital number, since it uses as much as digits as its factorization.

989705063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 408240, while the sum is 47.

The square root of 989705063 is about 31459.5782393852. The cubic root of 989705063 is about 996.5565103227.

The spelling of 989705063 in words is "nine hundred eighty-nine million, seven hundred five thousand, sixty-three".