406438512 has 40 divisors (see below), whose sum is σ = 1052182656. Its totient is φ = 135193536.

The previous prime is 406438493. The next prime is 406438517. The reversal of 406438512 is 215834604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406438517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14683 + ... + 32069.

Almost surely, 2^406438512 is an apocalyptic number.

It is an amenable number.

406438512 is an abundant number, since it is smaller than the sum of its proper divisors (645744144).

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

406438512 is a wasteful number, since it uses less digits than its factorization.

406438512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17885 (or 17879 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 406438512 is about 20160.3202355518. The cubic root of 406438512 is about 740.7385565274.

The spelling of 406438512 in words is "four hundred six million, four hundred thirty-eight thousand, five hundred twelve".