403960 has 16 divisors (see below), whose sum is σ = 909000. Its totient is φ = 161568.

The previous prime is 403957. The next prime is 403969. The reversal of 403960 is 69304.

403960 is a modest number, since divided by 3960 gives 40 as remainder.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5010 + ... + 5089.

2⁴⁰³⁹⁶⁰ is an apocalyptic number.

403960 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

403960 is an abundant number, since it is smaller than the sum of its proper divisors (505040).

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

403960 is a wasteful number, since it uses less digits than its factorization.

403960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10110 (or 10106 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 403960 is about 635.5784766652. The cubic root of 403960 is about 73.9229780538.

The spelling of 403960 in words is "four hundred three thousand, nine hundred sixty".