409440136 has 16 divisors (see below), whose sum is σ = 877371840. Its totient is φ = 175474320.

The previous prime is 409440133. The next prime is 409440151. The reversal of 409440136 is 631044904.

It is a junction number, because it is equal to n+sod(n) for n = 409440098 and 409440107.

It is not an unprimeable number, because it can be changed into a prime (409440133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3655660 + ... + 3655771.

It is an arithmetic number, because the mean of its divisors is an integer number (54835740).

Almost surely, 2^409440136 is an apocalyptic number.

It is an amenable number.

409440136 is an abundant number, since it is smaller than the sum of its proper divisors (467931704).

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

409440136 is a wasteful number, since it uses less digits than its factorization.

409440136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7311444 (or 7311440 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 409440136 is about 20234.6271524829. The cubic root of 409440136 is about 742.5575832330.

The spelling of 409440136 in words is "four hundred nine million, four hundred forty thousand, one hundred thirty-six".