478343923 has 2 divisors, whose sum is σ = 478343924. Its totient is φ = 478343922.

The previous prime is 478343917. The next prime is 478343927. The reversal of 478343923 is 329343874.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 478343923 - 2¹³ = 478335731 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 478343923.

It is not a weakly prime, because it can be changed into another prime (478343927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239171961 + 239171962.

It is an arithmetic number, because the mean of its divisors is an integer number (239171962).

Almost surely, 2^478343923 is an apocalyptic number.

478343923 is a deficient number, since it is larger than the sum of its proper divisors (1).

478343923 is an equidigital number, since it uses as much as digits as its factorization.

478343923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 43.

The square root of 478343923 is about 21871.0750307341. The cubic root of 478343923 is about 782.0720292407.

The spelling of 478343923 in words is "four hundred seventy-eight million, three hundred forty-three thousand, nine hundred twenty-three".