404354940 has 96 divisors (see below), whose sum is σ = 1252661760. Its totient is φ = 96633600.

The previous prime is 404354939. The next prime is 404354953. The reversal of 404354940 is 49453404.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42546 + ... + 51174.

It is an arithmetic number, because the mean of its divisors is an integer number (13048560).

Almost surely, 2^404354940 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 404354940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (626330880).

404354940 is an abundant number, since it is smaller than the sum of its proper divisors (848306820).

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

404354940 is a wasteful number, since it uses less digits than its factorization.

404354940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8723 (or 8721 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 33.

The square root of 404354940 is about 20108.5787662878. The cubic root of 404354940 is about 739.4706099250.

The spelling of 404354940 in words is "four hundred four million, three hundred fifty-four thousand, nine hundred forty".