401916 has 12 divisors (see below), whose sum is σ = 937832. Its totient is φ = 133968.

The previous prime is 401909. The next prime is 401917. The reversal of 401916 is 619104.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 401892 and 401901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401917) 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, 16735 + ... + 16758.

2⁴⁰¹⁹¹⁶ is an apocalyptic number.

It is an amenable number.

401916 is an abundant number, since it is smaller than the sum of its proper divisors (535916).

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

401916 is a wasteful number, since it uses less digits than its factorization.

401916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33500 (or 33498 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 401916 is about 633.9684534738. The cubic root of 401916 is about 73.7980860396.

The spelling of 401916 in words is "four hundred one thousand, nine hundred sixteen".