478926919 has 2 divisors, whose sum is σ = 478926920. Its totient is φ = 478926918.

The previous prime is 478926913. The next prime is 478926937. The reversal of 478926919 is 919629874.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 478926919 - 2⁵ = 478926887 is a prime.

It is a super-2 number, since 2×478926919² = 458741987485665122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 478926919.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (478926913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239463459 + 239463460.

It is an arithmetic number, because the mean of its divisors is an integer number (239463460).

Almost surely, 2^478926919 is an apocalyptic number.

478926919 is a deficient number, since it is larger than the sum of its proper divisors (1).

478926919 is an equidigital number, since it uses as much as digits as its factorization.

478926919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1959552, while the sum is 55.

The square root of 478926919 is about 21884.3989864926. The cubic root of 478926919 is about 782.3896248283.

The spelling of 478926919 in words is "four hundred seventy-eight million, nine hundred twenty-six thousand, nine hundred nineteen".