405532712 has 16 divisors (see below), whose sum is σ = 818864340. Its totient is φ = 187168896.

The previous prime is 405532703. The next prime is 405532769. The reversal of 405532712 is 217235504.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 293299876 + 112232836 = 17126^2 + 10594^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1949573 + ... + 1949780.

Almost surely, 2^405532712 is an apocalyptic number.

It is an amenable number.

405532712 is an abundant number, since it is smaller than the sum of its proper divisors (413331628).

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

405532712 is a wasteful number, since it uses less digits than its factorization.

405532712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3899372 (or 3899368 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 405532712 is about 20137.8427841713. The cubic root of 405532712 is about 740.1878704880.

The spelling of 405532712 in words is "four hundred five million, five hundred thirty-two thousand, seven hundred twelve".