477971047 has 2 divisors, whose sum is σ = 477971048. Its totient is φ = 477971046.

The previous prime is 477971023. The next prime is 477971107. The reversal of 477971047 is 740179774.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-477971047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 477970988 and 477971006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (477971647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 238985523 + 238985524.

It is an arithmetic number, because the mean of its divisors is an integer number (238985524).

Almost surely, 2^477971047 is an apocalyptic number.

477971047 is a deficient number, since it is larger than the sum of its proper divisors (1).

477971047 is an equidigital number, since it uses as much as digits as its factorization.

477971047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 345744, while the sum is 46.

The square root of 477971047 is about 21862.5489593506. The cubic root of 477971047 is about 781.8687642663.

The spelling of 477971047 in words is "four hundred seventy-seven million, nine hundred seventy-one thousand, forty-seven".