405449568 has 36 divisors (see below), whose sum is σ = 1152998028. Its totient is φ = 135149760.

The previous prime is 405449521. The next prime is 405449573. The reversal of 405449568 is 865944504.

405449568 is a `hidden beast` number, since 40 + 5 + 4 + 49 + 568 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 703618 + ... + 704193.

It is an arithmetic number, because the mean of its divisors is an integer number (32027723).

Almost surely, 2^405449568 is an apocalyptic number.

405449568 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

405449568 is an abundant number, since it is smaller than the sum of its proper divisors (747548460).

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

405449568 is a wasteful number, since it uses less digits than its factorization.

405449568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1407827 (or 1407816 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 45.

The square root of 405449568 is about 20135.7783062885. The cubic root of 405449568 is about 740.1372815673.

The spelling of 405449568 in words is "four hundred five million, four hundred forty-nine thousand, five hundred sixty-eight".