479891 has 2 divisors, whose sum is σ = 479892. Its totient is φ = 479890.

The previous prime is 479881. The next prime is 479903. The reversal of 479891 is 198974.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 479891 - 2¹⁸ = 217747 is a prime.

It is a Chen prime.

It is equal to p₃₉₉₉₈ and since 479891 and 39998 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (479821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239945 + 239946.

It is an arithmetic number, because the mean of its divisors is an integer number (239946).

2⁴⁷⁹⁸⁹¹ is an apocalyptic number.

479891 is a deficient number, since it is larger than the sum of its proper divisors (1).

479891 is an equidigital number, since it uses as much as digits as its factorization.

479891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 38.

The square root of 479891 is about 692.7416545870. The cubic root of 479891 is about 78.2914257001.

The spelling of 479891 in words is "four hundred seventy-nine thousand, eight hundred ninety-one".