409028538 has 8 divisors (see below), whose sum is σ = 818057088. Its totient is φ = 136342844.

The previous prime is 409028509. The next prime is 409028569. The reversal of 409028538 is 835820904.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

409028538 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 409028496 and 409028505.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34085706 + ... + 34085717.

It is an arithmetic number, because the mean of its divisors is an integer number (102257136).

Almost surely, 2^409028538 is an apocalyptic number.

409028538 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

409028538 is a wasteful number, since it uses less digits than its factorization.

409028538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68171428.

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 409028538 is about 20224.4539604905. The cubic root of 409028538 is about 742.3086761183.

The spelling of 409028538 in words is "four hundred nine million, twenty-eight thousand, five hundred thirty-eight".