400579 has 2 divisors, whose sum is σ = 400580. Its totient is φ = 400578.

The previous prime is 400559. The next prime is 400597. The reversal of 400579 is 975004.

Together with next prime (400597) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 400579 - 2⁹ = 400067 is a prime.

400579 is a lucky number.

It is a zygodrome in base 2.

It is not a weakly prime, because it can be changed into another prime (400559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200289 + 200290.

It is an arithmetic number, because the mean of its divisors is an integer number (200290).

2⁴⁰⁰⁵⁷⁹ is an apocalyptic number.

400579 is a deficient number, since it is larger than the sum of its proper divisors (1).

400579 is an equidigital number, since it uses as much as digits as its factorization.

400579 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 400579 is about 632.9131062002. The cubic root of 400579 is about 73.7161637372.

It can be divided in two parts, 400 and 579, that added together give a palindrome (979).

The spelling of 400579 in words is "four hundred thousand, five hundred seventy-nine".