384271397 has 2 divisors, whose sum is σ = 384271398. Its totient is φ = 384271396.

The previous prime is 384271379. The next prime is 384271399. The reversal of 384271397 is 793172483.

Together with previous prime (384271379) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 338044996 + 46226401 = 18386^2 + 6799^2 .

It is a cyclic number.

It is not a de Polignac number, because 384271397 - 2¹⁸ = 384009253 is a prime.

Together with 384271399, 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 (384271399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192135698 + 192135699.

It is an arithmetic number, because the mean of its divisors is an integer number (192135699).

Almost surely, 2^384271397 is an apocalyptic number.

It is an amenable number.

384271397 is a deficient number, since it is larger than the sum of its proper divisors (1).

384271397 is an equidigital number, since it uses as much as digits as its factorization.

384271397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 44.

The square root of 384271397 is about 19602.8415542237. The cubic root of 384271397 is about 727.0194332927.

The spelling of 384271397 in words is "three hundred eighty-four million, two hundred seventy-one thousand, three hundred ninety-seven".