405444516 has 24 divisors (see below), whose sum is σ = 948773280. Its totient is φ = 134757312.

The previous prime is 405444497. The next prime is 405444517. The reversal of 405444516 is 615444504.

It is not an unprimeable number, because it can be changed into a prime (405444517) 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 7 ways as a sum of consecutive naturals, for example, 44521 + ... + 52848.

It is an arithmetic number, because the mean of its divisors is an integer number (39532220).

Almost surely, 2^405444516 is an apocalyptic number.

It is an amenable number.

405444516 is an abundant number, since it is smaller than the sum of its proper divisors (543328764).

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

405444516 is a wasteful number, since it uses less digits than its factorization.

405444516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97723 (or 97721 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 33.

The square root of 405444516 is about 20135.6528575559. The cubic root of 405444516 is about 740.1342074578.

The spelling of 405444516 in words is "four hundred five million, four hundred forty-four thousand, five hundred sixteen".