405409332 has 48 divisors (see below), whose sum is σ = 974635200. Its totient is φ = 131083008.

The previous prime is 405409321. The next prime is 405409373. The reversal of 405409332 is 233904504.

It is a self number, because there is not a number n which added to its sum of digits gives 405409332.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74248 + ... + 79520.

It is an arithmetic number, because the mean of its divisors is an integer number (20304900).

Almost surely, 2^405409332 is an apocalyptic number.

It is an amenable number.

405409332 is an abundant number, since it is smaller than the sum of its proper divisors (569225868).

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

405409332 is a wasteful number, since it uses less digits than its factorization.

405409332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5472 (or 5470 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 405409332 is about 20134.7791644209. The cubic root of 405409332 is about 740.1127975121.

The spelling of 405409332 in words is "four hundred five million, four hundred nine thousand, three hundred thirty-two".