404214140 has 48 divisors (see below), whose sum is σ = 938740320. Its totient is φ = 144967680.

The previous prime is 404214119. The next prime is 404214157. The reversal of 404214140 is 41412404.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3476 + ... + 28644.

It is an arithmetic number, because the mean of its divisors is an integer number (19557090).

Almost surely, 2^404214140 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 404214140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (469370160).

404214140 is an abundant number, since it is smaller than the sum of its proper divisors (534526180).

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

404214140 is a wasteful number, since it uses less digits than its factorization.

404214140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25262 (or 25260 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 404214140 is about 20105.0774681422. The cubic root of 404214140 is about 739.3847698715.

Adding to 404214140 its reverse (41412404), we get a palindrome (445626544).

The spelling of 404214140 in words is "four hundred four million, two hundred fourteen thousand, one hundred forty".