405404496 has 120 divisors (see below), whose sum is σ = 1300819520. Its totient is φ = 115458048.

The previous prime is 405404479. The next prime is 405404507. The reversal of 405404496 is 694404504.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 405404496.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 526800 + ... + 527568.

Almost surely, 2^405404496 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 405404496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (650409760).

405404496 is an abundant number, since it is smaller than the sum of its proper divisors (895415024).

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

405404496 is a wasteful number, since it uses less digits than its factorization.

405404496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1313 (or 1304 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 405404496 is about 20134.6590733491. The cubic root of 405404496 is about 740.1098546431.

The spelling of 405404496 in words is "four hundred five million, four hundred four thousand, four hundred ninety-six".