400459 has 8 divisors (see below), whose sum is σ = 418880. Its totient is φ = 382536.

The previous prime is 400457. The next prime is 400471. The reversal of 400459 is 954004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 400459 - 2¹ = 400457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2812 + ... + 2950.

It is an arithmetic number, because the mean of its divisors is an integer number (52360).

2⁴⁰⁰⁴⁵⁹ is an apocalyptic number.

400459 is a deficient number, since it is larger than the sum of its proper divisors (18421).

400459 is a wasteful number, since it uses less digits than its factorization.

400459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 400459 is about 632.8182993561. The cubic root of 400459 is about 73.7088020407.

The spelling of 400459 in words is "four hundred thousand, four hundred fifty-nine".