102117479 has 2 divisors, whose sum is σ = 102117480. Its totient is φ = 102117478.

The previous prime is 102117469. The next prime is 102117481. The reversal of 102117479 is 974711201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 102117479 - 2¹² = 102113383 is a prime.

Together with 102117481, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102117409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51058739 + 51058740.

It is an arithmetic number, because the mean of its divisors is an integer number (51058740).

Almost surely, 2^102117479 is an apocalyptic number.

102117479 is a deficient number, since it is larger than the sum of its proper divisors (1).

102117479 is an equidigital number, since it uses as much as digits as its factorization.

102117479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3528, while the sum is 32.

The square root of 102117479 is about 10105.3193418120. The cubic root of 102117479 is about 467.4121832631.

The spelling of 102117479 in words is "one hundred two million, one hundred seventeen thousand, four hundred seventy-nine".