102448789 has 2 divisors, whose sum is σ = 102448790. Its totient is φ = 102448788.

The previous prime is 102448777. The next prime is 102448807. The reversal of 102448789 is 987844201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74252689 + 28196100 = 8617^2 + 5310^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102448789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102448289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51224394 + 51224395.

It is an arithmetic number, because the mean of its divisors is an integer number (51224395).

Almost surely, 2^102448789 is an apocalyptic number.

It is an amenable number.

102448789 is a deficient number, since it is larger than the sum of its proper divisors (1).

102448789 is an equidigital number, since it uses as much as digits as its factorization.

102448789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129024, while the sum is 43.

The square root of 102448789 is about 10121.6989186599. The cubic root of 102448789 is about 467.9171283486.

The spelling of 102448789 in words is "one hundred two million, four hundred forty-eight thousand, seven hundred eighty-nine".