478729 has 2 divisors, whose sum is σ = 478730. Its totient is φ = 478728.

The previous prime is 478727. The next prime is 478739. The reversal of 478729 is 927874.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 455625 + 23104 = 675^2 + 152^2 .

It is a cyclic number.

It is not a de Polignac number, because 478729 - 2¹ = 478727 is a prime.

Together with 478727, it forms a pair of twin primes.

It is an alternating number because its digits alternate between even and odd.

478729 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (478727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239364 + 239365.

It is an arithmetic number, because the mean of its divisors is an integer number (239365).

2⁴⁷⁸⁷²⁹ is an apocalyptic number.

It is an amenable number.

478729 is a deficient number, since it is larger than the sum of its proper divisors (1).

478729 is an equidigital number, since it uses as much as digits as its factorization.

478729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28224, while the sum is 37.

The square root of 478729 is about 691.9024497716. The cubic root of 478729 is about 78.2281834473.

The spelling of 478729 in words is "four hundred seventy-eight thousand, seven hundred twenty-nine".