383680247 has 2 divisors, whose sum is σ = 383680248. Its totient is φ = 383680246.

The previous prime is 383680217. The next prime is 383680249. The reversal of 383680247 is 742086383.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 383680247 - 2¹² = 383676151 is a prime.

Together with 383680249, 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 (383680249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 191840123 + 191840124.

It is an arithmetic number, because the mean of its divisors is an integer number (191840124).

Almost surely, 2^383680247 is an apocalyptic number.

383680247 is a deficient number, since it is larger than the sum of its proper divisors (1).

383680247 is an equidigital number, since it uses as much as digits as its factorization.

383680247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 193536, while the sum is 41.

The square root of 383680247 is about 19587.7575796721. The cubic root of 383680247 is about 726.6464346648.

The spelling of 383680247 in words is "three hundred eighty-three million, six hundred eighty thousand, two hundred forty-seven".