405945108 has 168 divisors, whose sum is σ = 1189883520. Its totient is φ = 120372480.

The previous prime is 405945077. The next prime is 405945131. The reversal of 405945108 is 801549504.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 941653 + ... + 942083.

It is an arithmetic number, because the mean of its divisors is an integer number (7082640).

Almost surely, 2^405945108 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 405945108, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (594941760).

405945108 is an abundant number, since it is smaller than the sum of its proper divisors (783938412).

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

405945108 is a wasteful number, since it uses less digits than its factorization.

405945108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489 (or 472 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 405945108 is about 20148.0795114572. The cubic root of 405945108 is about 740.4386904542.

The spelling of 405945108 in words is "four hundred five million, nine hundred forty-five thousand, one hundred eight".