403964 has 12 divisors (see below), whose sum is σ = 771288. Its totient is φ = 183600.

The previous prime is 403957. The next prime is 403969. The reversal of 403964 is 469304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403969) 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 3 ways as a sum of consecutive naturals, for example, 4547 + ... + 4634.

It is an arithmetic number, because the mean of its divisors is an integer number (64274).

2⁴⁰³⁹⁶⁴ is an apocalyptic number.

403964 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

403964 is a deficient number, since it is larger than the sum of its proper divisors (367324).

403964 is a wasteful number, since it uses less digits than its factorization.

403964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9196 (or 9194 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 403964 is about 635.5816233970. The cubic root of 403964 is about 73.9232220474.

It can be divided in two parts, 40 and 3964, that added together give a palindrome (4004).

The spelling of 403964 in words is "four hundred three thousand, nine hundred sixty-four".