405542896 has 40 divisors (see below), whose sum is σ = 861552000. Its totient is φ = 183395520.

The previous prime is 405542881. The next prime is 405542911. The reversal of 405542896 is 698245504.

It is an interprime number because it is at equal distance from previous prime (405542881) and next prime (405542911).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29235 + ... + 40813.

It is an arithmetic number, because the mean of its divisors is an integer number (21538800).

Almost surely, 2^405542896 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 405542896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (430776000).

405542896 is an abundant number, since it is smaller than the sum of its proper divisors (456009104).

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

405542896 is a wasteful number, since it uses less digits than its factorization.

405542896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11797 (or 11791 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 43.

The square root of 405542896 is about 20138.0956398563. The cubic root of 405542896 is about 740.1940664618.

The spelling of 405542896 in words is "four hundred five million, five hundred forty-two thousand, eight hundred ninety-six".