478099879 has 2 divisors, whose sum is σ = 478099880. Its totient is φ = 478099878.

The previous prime is 478099847. The next prime is 478099939. The reversal of 478099879 is 978990874.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 478099879 - 2⁵ = 478099847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (478094879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239049939 + 239049940.

It is an arithmetic number, because the mean of its divisors is an integer number (239049940).

Almost surely, 2^478099879 is an apocalyptic number.

478099879 is a deficient number, since it is larger than the sum of its proper divisors (1).

478099879 is an equidigital number, since it uses as much as digits as its factorization.

478099879 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9144576, while the sum is 61.

The square root of 478099879 is about 21865.4951693301. The cubic root of 478099879 is about 781.9390060856.

The spelling of 478099879 in words is "four hundred seventy-eight million, ninety-nine thousand, eight hundred seventy-nine".