404098398 has 96 divisors (see below), whose sum is σ = 1017349632. Its totient is φ = 114566400.

The previous prime is 404098397. The next prime is 404098421. The reversal of 404098398 is 893890404.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404098397) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 911965 + ... + 912407.

It is an arithmetic number, because the mean of its divisors is an integer number (10597392).

Almost surely, 2^404098398 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 404098398, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (508674816).

404098398 is an abundant number, since it is smaller than the sum of its proper divisors (613251234).

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

404098398 is a wasteful number, since it uses less digits than its factorization.

404098398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750 (or 747 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 404098398 is about 20102.1988349534. The cubic root of 404098398 is about 739.3141917357.

It can be divided in two parts, 404098 and 398, that added together give a square (404496 = 636²).

The spelling of 404098398 in words is "four hundred four million, ninety-eight thousand, three hundred ninety-eight".