403216404 has 96 divisors (see below), whose sum is σ = 1094446080. Its totient is φ = 114605568.

The previous prime is 403216403. The next prime is 403216409. The reversal of 403216404 is 404612304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403216403) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 86887 + ... + 91409.

It is an arithmetic number, because the mean of its divisors is an integer number (11400480).

Almost surely, 2^403216404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 403216404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (547223040).

403216404 is an abundant number, since it is smaller than the sum of its proper divisors (691229676).

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

403216404 is a wasteful number, since it uses less digits than its factorization.

403216404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4589 (or 4587 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 403216404 is about 20080.2491020405. The cubic root of 403216404 is about 738.7759188229.

Adding to 403216404 its reverse (404612304), we get a palindrome (807828708).

The spelling of 403216404 in words is "four hundred three million, two hundred sixteen thousand, four hundred four".