102379217 has 2 divisors, whose sum is σ = 102379218. Its totient is φ = 102379216.

The previous prime is 102379213. The next prime is 102379237. The reversal of 102379217 is 712973201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100781521 + 1597696 = 10039^2 + 1264^2 .

It is an emirp because it is prime and its reverse (712973201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102379217 - 2² = 102379213 is a prime.

It is not a weakly prime, because it can be changed into another prime (102379213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51189608 + 51189609.

It is an arithmetic number, because the mean of its divisors is an integer number (51189609).

Almost surely, 2^102379217 is an apocalyptic number.

It is an amenable number.

102379217 is a deficient number, since it is larger than the sum of its proper divisors (1).

102379217 is an equidigital number, since it uses as much as digits as its factorization.

102379217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5292, while the sum is 32.

The square root of 102379217 is about 10118.2615601693. The cubic root of 102379217 is about 467.8111850034.

The spelling of 102379217 in words is "one hundred two million, three hundred seventy-nine thousand, two hundred seventeen".