102302989 has 2 divisors, whose sum is σ = 102302990. Its totient is φ = 102302988.

The previous prime is 102302983. The next prime is 102303017. The reversal of 102302989 is 989203201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75986089 + 26316900 = 8717^2 + 5130^2 .

It is a cyclic number.

It is not a de Polignac number, because 102302989 - 2⁷ = 102302861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102302983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51151494 + 51151495.

It is an arithmetic number, because the mean of its divisors is an integer number (51151495).

Almost surely, 2^102302989 is an apocalyptic number.

It is an amenable number.

102302989 is a deficient number, since it is larger than the sum of its proper divisors (1).

102302989 is an equidigital number, since it uses as much as digits as its factorization.

102302989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 102302989 is about 10114.4940061280. The cubic root of 102302989 is about 467.6950508693.

The spelling of 102302989 in words is "one hundred two million, three hundred two thousand, nine hundred eighty-nine".