400470 has 32 divisors (see below), whose sum is σ = 1099008. Its totient is φ = 91488.

The previous prime is 400457. The next prime is 400471. The reversal of 400470 is 74004.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 744 + ... + 1163.

It is an arithmetic number, because the mean of its divisors is an integer number (34344).

2⁴⁰⁰⁴⁷⁰ is an apocalyptic number.

400470 is an abundant number, since it is smaller than the sum of its proper divisors (698538).

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

400470 is a wasteful number, since it uses less digits than its factorization.

400470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1924.

The product of its (nonzero) digits is 112, while the sum is 15.

The square root of 400470 is about 632.8269905748. The cubic root of 400470 is about 73.7094769241.

Adding to 400470 its reverse (74004), we get a palindrome (474474).

The spelling of 400470 in words is "four hundred thousand, four hundred seventy", and thus it is an iban number.