102238849 has 2 divisors, whose sum is σ = 102238850. Its totient is φ = 102238848.

The previous prime is 102238847. The next prime is 102238879. The reversal of 102238849 is 948832201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101364624 + 874225 = 10068^2 + 935^2 .

It is a cyclic number.

It is not a de Polignac number, because 102238849 - 2¹ = 102238847 is a prime.

Together with 102238847, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (102238847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51119424 + 51119425.

It is an arithmetic number, because the mean of its divisors is an integer number (51119425).

Almost surely, 2^102238849 is an apocalyptic number.

It is an amenable number.

102238849 is a deficient number, since it is larger than the sum of its proper divisors (1).

102238849 is an equidigital number, since it uses as much as digits as its factorization.

102238849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 102238849 is about 10111.3228115811. The cubic root of 102238849 is about 467.5972882258.

The spelling of 102238849 in words is "one hundred two million, two hundred thirty-eight thousand, eight hundred forty-nine".