409947798 has 16 divisors (see below), whose sum is σ = 882964656. Its totient is φ = 126137760.

The previous prime is 409947773. The next prime is 409947817. The reversal of 409947798 is 897749904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2627793 + ... + 2627948.

It is an arithmetic number, because the mean of its divisors is an integer number (55185291).

Almost surely, 2^409947798 is an apocalyptic number.

409947798 is an abundant number, since it is smaller than the sum of its proper divisors (473016858).

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

409947798 is a wasteful number, since it uses less digits than its factorization.

409947798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5255759.

The product of its (nonzero) digits is 4572288, while the sum is 57.

The square root of 409947798 is about 20247.1676537732. The cubic root of 409947798 is about 742.8643538219.

The spelling of 409947798 in words is "four hundred nine million, nine hundred forty-seven thousand, seven hundred ninety-eight".