384478973 has 2 divisors, whose sum is σ = 384478974. Its totient is φ = 384478972.

The previous prime is 384478961. The next prime is 384478979. The reversal of 384478973 is 379874483.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 358079929 + 26399044 = 18923^2 + 5138^2 .

It is a cyclic number.

It is not a de Polignac number, because 384478973 - 2⁶ = 384478909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (384478979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192239486 + 192239487.

It is an arithmetic number, because the mean of its divisors is an integer number (192239487).

Almost surely, 2^384478973 is an apocalyptic number.

It is an amenable number.

384478973 is a deficient number, since it is larger than the sum of its proper divisors (1).

384478973 is an equidigital number, since it uses as much as digits as its factorization.

384478973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4064256, while the sum is 53.

The square root of 384478973 is about 19608.1353779496. The cubic root of 384478973 is about 727.1503170223.

The spelling of 384478973 in words is "three hundred eighty-four million, four hundred seventy-eight thousand, nine hundred seventy-three".