409945086 has 24 divisors (see below), whose sum is σ = 897375024. Its totient is φ = 135239040.

The previous prime is 409945079. The next prime is 409945099. The reversal of 409945086 is 680549904.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 115650 + ... + 119141.

It is an arithmetic number, because the mean of its divisors is an integer number (37390626).

Almost surely, 2^409945086 is an apocalyptic number.

409945086 is an abundant number, since it is smaller than the sum of its proper divisors (487429938).

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

409945086 is a wasteful number, since it uses less digits than its factorization.

409945086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234896 (or 234893 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 409945086 is about 20247.1006813321. The cubic root of 409945086 is about 742.8627156845.

The spelling of 409945086 in words is "four hundred nine million, nine hundred forty-five thousand, eighty-six".