409165326 has 24 divisors (see below), whose sum is σ = 886990104. Its totient is φ = 136316880.

The previous prime is 409165297. The next prime is 409165327. The reversal of 409165326 is 623561904.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (409165327) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38085 + ... + 47631.

It is an arithmetic number, because the mean of its divisors is an integer number (36957921).

Almost surely, 2^409165326 is an apocalyptic number.

409165326 is an abundant number, since it is smaller than the sum of its proper divisors (477824778).

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

409165326 is a wasteful number, since it uses less digits than its factorization.

409165326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11936 (or 11933 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 409165326 is about 20227.8354254725. The cubic root of 409165326 is about 742.3914149274.

The spelling of 409165326 in words is "four hundred nine million, one hundred sixty-five thousand, three hundred twenty-six".