476808139 has 2 divisors, whose sum is σ = 476808140. Its totient is φ = 476808138.

The previous prime is 476808127. The next prime is 476808251. The reversal of 476808139 is 931808674.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 476808139 - 2⁹ = 476807627 is a prime.

It is not a weakly prime, because it can be changed into another prime (476808109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 238404069 + 238404070.

It is an arithmetic number, because the mean of its divisors is an integer number (238404070).

Almost surely, 2^476808139 is an apocalyptic number.

476808139 is a deficient number, since it is larger than the sum of its proper divisors (1).

476808139 is an equidigital number, since it uses as much as digits as its factorization.

476808139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 476808139 is about 21835.9368702147. The cubic root of 476808139 is about 781.2341513244.

The spelling of 476808139 in words is "four hundred seventy-six million, eight hundred eight thousand, one hundred thirty-nine".