476478139 has 2 divisors, whose sum is σ = 476478140. Its totient is φ = 476478138.

The previous prime is 476478133. The next prime is 476478161. The reversal of 476478139 is 931874674.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 476478139 - 2²⁷ = 342260411 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 476478092 and 476478101.

It is not a weakly prime, because it can be changed into another prime (476478133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 238239069 + 238239070.

It is an arithmetic number, because the mean of its divisors is an integer number (238239070).

Almost surely, 2^476478139 is an apocalyptic number.

476478139 is a deficient number, since it is larger than the sum of its proper divisors (1).

476478139 is an equidigital number, since it uses as much as digits as its factorization.

476478139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1016064, while the sum is 49.

The square root of 476478139 is about 21828.3792114761. The cubic root of 476478139 is about 781.0538784165.

The spelling of 476478139 in words is "four hundred seventy-six million, four hundred seventy-eight thousand, one hundred thirty-nine".