405641332 has 12 divisors (see below), whose sum is σ = 711287136. Its totient is φ = 202416440.

The previous prime is 405641329. The next prime is 405641333. The reversal of 405641332 is 233146504.

It is a self number, because there is not a number n which added to its sum of digits gives 405641332.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405641333) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 98794 + ... + 102817.

It is an arithmetic number, because the mean of its divisors is an integer number (59273928).

Almost surely, 2^405641332 is an apocalyptic number.

It is an amenable number.

405641332 is a deficient number, since it is larger than the sum of its proper divisors (305645804).

405641332 is a wasteful number, since it uses less digits than its factorization.

405641332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202118 (or 202116 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 405641332 is about 20140.5395161103. The cubic root of 405641332 is about 740.2539498507.

Adding to 405641332 its reverse (233146504), we get a palindrome (638787836).

The spelling of 405641332 in words is "four hundred five million, six hundred forty-one thousand, three hundred thirty-two".