384955399 has 2 divisors, whose sum is σ = 384955400. Its totient is φ = 384955398.

The previous prime is 384955381. The next prime is 384955423. The reversal of 384955399 is 993559483.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 384955399 - 2¹³ = 384947207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (384955379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192477699 + 192477700.

It is an arithmetic number, because the mean of its divisors is an integer number (192477700).

Almost surely, 2^384955399 is an apocalyptic number.

384955399 is a deficient number, since it is larger than the sum of its proper divisors (1).

384955399 is an equidigital number, since it uses as much as digits as its factorization.

384955399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5248800, while the sum is 55.

The square root of 384955399 is about 19620.2802987113. The cubic root of 384955399 is about 727.4505417817.

The spelling of 384955399 in words is "three hundred eighty-four million, nine hundred fifty-five thousand, three hundred ninety-nine".