477247847 has 2 divisors, whose sum is σ = 477247848. Its totient is φ = 477247846.

The previous prime is 477247829. The next prime is 477247877. The reversal of 477247847 is 748742774.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 477247847 - 2¹² = 477243751 is a prime.

It is a super-2 number, since 2×477247847² = 455531014932270818, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 477247795 and 477247804.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (477247877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 238623923 + 238623924.

It is an arithmetic number, because the mean of its divisors is an integer number (238623924).

Almost surely, 2^477247847 is an apocalyptic number.

477247847 is a deficient number, since it is larger than the sum of its proper divisors (1).

477247847 is an equidigital number, since it uses as much as digits as its factorization.

477247847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2458624, while the sum is 50.

The square root of 477247847 is about 21846.0029982603. The cubic root of 477247847 is about 781.4742264802.

The spelling of 477247847 in words is "four hundred seventy-seven million, two hundred forty-seven thousand, eight hundred forty-seven".