400235 has 16 divisors (see below), whose sum is σ = 552960. Its totient is φ = 275040.

The previous prime is 400217. The next prime is 400237. The reversal of 400235 is 532004.

It is not a de Polignac number, because 400235 - 2⁸ = 399979 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 854 + ... + 1236.

It is an arithmetic number, because the mean of its divisors is an integer number (34560).

2⁴⁰⁰²³⁵ is an apocalyptic number.

400235 is a deficient number, since it is larger than the sum of its proper divisors (152725).

400235 is a wasteful number, since it uses less digits than its factorization.

400235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418.

The product of its (nonzero) digits is 120, while the sum is 14.

The square root of 400235 is about 632.6412885672. The cubic root of 400235 is about 73.6950562714.

Adding to 400235 its reverse (532004), we get a palindrome (932239).

Subtracting 400235 from its reverse (532004), we obtain a square (131769 = 363²).

The spelling of 400235 in words is "four hundred thousand, two hundred thirty-five".