400600 has 24 divisors (see below), whose sum is σ = 931860. Its totient is φ = 160160.

The previous prime is 400597. The next prime is 400601. The reversal of 400600 is 6004.

It is a Harshad number since it is a multiple of its sum of digits (10).

400600 is a modest number, since divided by 600 gives 400 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400601) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 802 + ... + 1201.

2⁴⁰⁰⁶⁰⁰ is an apocalyptic number.

400600 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400600 is an abundant number, since it is smaller than the sum of its proper divisors (531260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400600 is a wasteful number, since it uses less digits than its factorization.

400600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2019 (or 2010 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 400600 is about 632.9296959379. The cubic root of 400600 is about 73.7174518830.

Adding to 400600 its reverse (6004), we get a palindrome (406604).

It can be divided in two parts, 400 and 600, that added together give a cube (1000 = 10³).

The spelling of 400600 in words is "four hundred thousand, six hundred".