477977447 has 2 divisors, whose sum is σ = 477977448. Its totient is φ = 477977446.

The previous prime is 477977419. The next prime is 477977459. The reversal of 477977447 is 744779774.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 477977447 - 2¹⁴ = 477961063 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 477977392 and 477977401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (477977417) 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, 238988723 + 238988724.

It is an arithmetic number, because the mean of its divisors is an integer number (238988724).

Almost surely, 2^477977447 is an apocalyptic number.

477977447 is a deficient number, since it is larger than the sum of its proper divisors (1).

477977447 is an equidigital number, since it uses as much as digits as its factorization.

477977447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9680832, while the sum is 56.

The square root of 477977447 is about 21862.6953278867. The cubic root of 477977447 is about 781.8722539740.

The spelling of 477977447 in words is "four hundred seventy-seven million, nine hundred seventy-seven thousand, four hundred forty-seven".