404219744 has 48 divisors (see below), whose sum is σ = 846417600. Its totient is φ = 189364224.

The previous prime is 404219741. The next prime is 404219747. The reversal of 404219744 is 447912404.

It is an interprime number because it is at equal distance from previous prime (404219741) and next prime (404219747).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404219741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128462 + ... + 131570.

It is an arithmetic number, because the mean of its divisors is an integer number (17633700).

Almost surely, 2^404219744 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 404219744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (423208800).

404219744 is an abundant number, since it is smaller than the sum of its proper divisors (442197856).

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

404219744 is a wasteful number, since it uses less digits than its factorization.

404219744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3375 (or 3367 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 404219744 is about 20105.2168354385. The cubic root of 404219744 is about 739.3881867840.

The spelling of 404219744 in words is "four hundred four million, two hundred nineteen thousand, seven hundred forty-four".