471827891 has 2 divisors, whose sum is σ = 471827892. Its totient is φ = 471827890.

The previous prime is 471827857. The next prime is 471827947. The reversal of 471827891 is 198728174.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 471827891 - 2⁶ = 471827827 is a prime.

It is not a weakly prime, because it can be changed into another prime (471827821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 235913945 + 235913946.

It is an arithmetic number, because the mean of its divisors is an integer number (235913946).

Almost surely, 2^471827891 is an apocalyptic number.

471827891 is a deficient number, since it is larger than the sum of its proper divisors (1).

471827891 is an equidigital number, since it uses as much as digits as its factorization.

471827891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 225792, while the sum is 47.

The square root of 471827891 is about 21721.5996418312. The cubic root of 471827891 is about 778.5046361161.

The spelling of 471827891 in words is "four hundred seventy-one million, eight hundred twenty-seven thousand, eight hundred ninety-one".