409827798 has 12 divisors (see below), whose sum is σ = 887960268. Its totient is φ = 136609260.

The previous prime is 409827793. The next prime is 409827851. The reversal of 409827798 is 897728904.

409827798 is a `hidden beast` number, since 409 + 82 + 77 + 98 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (409827793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11384088 + ... + 11384123.

It is an arithmetic number, because the mean of its divisors is an integer number (73996689).

Almost surely, 2^409827798 is an apocalyptic number.

409827798 is an abundant number, since it is smaller than the sum of its proper divisors (478132470).

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

409827798 is a wasteful number, since it uses less digits than its factorization.

409827798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22768219 (or 22768216 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 54.

The square root of 409827798 is about 20244.2040594339. The cubic root of 409827798 is about 742.7918629484.

The spelling of 409827798 in words is "four hundred nine million, eight hundred twenty-seven thousand, seven hundred ninety-eight".