409997814 has 16 divisors (see below), whose sum is σ = 842158128. Its totient is φ = 132972192.

The previous prime is 409997803. The next prime is 409997821. The reversal of 409997814 is 418799904.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 923197 + ... + 923640.

It is an arithmetic number, because the mean of its divisors is an integer number (52634883).

Almost surely, 2^409997814 is an apocalyptic number.

409997814 is an abundant number, since it is smaller than the sum of its proper divisors (432160314).

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

409997814 is a wasteful number, since it uses less digits than its factorization.

409997814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1846879.

The product of its (nonzero) digits is 653184, while the sum is 51.

The square root of 409997814 is about 20248.4027518222. The cubic root of 409997814 is about 742.8945638412.

The spelling of 409997814 in words is "four hundred nine million, nine hundred ninety-seven thousand, eight hundred fourteen".