102998789 has 2 divisors, whose sum is σ = 102998790. Its totient is φ = 102998788.

The previous prime is 102998773. The next prime is 102998809. The reversal of 102998789 is 987899201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81450625 + 21548164 = 9025^2 + 4642^2 .

It is a cyclic number.

It is not a de Polignac number, because 102998789 - 2⁴ = 102998773 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102998789.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102998729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51499394 + 51499395.

It is an arithmetic number, because the mean of its divisors is an integer number (51499395).

Almost surely, 2^102998789 is an apocalyptic number.

It is an amenable number.

102998789 is a deficient number, since it is larger than the sum of its proper divisors (1).

102998789 is an equidigital number, since it uses as much as digits as its factorization.

102998789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 653184, while the sum is 53.

The square root of 102998789 is about 10148.8319032291. The cubic root of 102998789 is about 468.7529776640.

The spelling of 102998789 in words is "one hundred two million, nine hundred ninety-eight thousand, seven hundred eighty-nine".