384681377 has 2 divisors, whose sum is σ = 384681378. Its totient is φ = 384681376.

The previous prime is 384681361. The next prime is 384681419. The reversal of 384681377 is 773186483.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 378535936 + 6145441 = 19456^2 + 2479^2 .

It is a cyclic number.

It is not a de Polignac number, because 384681377 - 2⁴ = 384681361 is a prime.

It is a super-2 number, since 2×384681377² = 295959523621232258, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (384681977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192340688 + 192340689.

It is an arithmetic number, because the mean of its divisors is an integer number (192340689).

Almost surely, 2^384681377 is an apocalyptic number.

It is an amenable number.

384681377 is a deficient number, since it is larger than the sum of its proper divisors (1).

384681377 is an equidigital number, since it uses as much as digits as its factorization.

384681377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 677376, while the sum is 47.

The square root of 384681377 is about 19613.2959239389. The cubic root of 384681377 is about 727.2778942753.

The spelling of 384681377 in words is "three hundred eighty-four million, six hundred eighty-one thousand, three hundred seventy-seven".