403995 has 16 divisors (see below), whose sum is σ = 675072. Its totient is φ = 205920.

The previous prime is 403993. The next prime is 404009. The reversal of 403995 is 599304.

It is not a de Polignac number, because 403995 - 2¹ = 403993 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403993) 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, 241 + ... + 930.

It is an arithmetic number, because the mean of its divisors is an integer number (42192).

2⁴⁰³⁹⁹⁵ is an apocalyptic number.

403995 is a deficient number, since it is larger than the sum of its proper divisors (271077).

403995 is a wasteful number, since it uses less digits than its factorization.

403995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1202.

The product of its (nonzero) digits is 4860, while the sum is 30.

The square root of 403995 is about 635.6060100408. The cubic root of 403995 is about 73.9251129430.

It can be divided in two parts, 40399 and 5, that added together give a palindrome (40404).

The spelling of 403995 in words is "four hundred three thousand, nine hundred ninety-five".