404442030 has 16 divisors (see below), whose sum is σ = 970660944. Its totient is φ = 107851200.

The previous prime is 404442013. The next prime is 404442187. The reversal of 404442030 is 30244404.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 404441988 and 404442006.

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, 6740671 + ... + 6740730.

It is an arithmetic number, because the mean of its divisors is an integer number (60666309).

Almost surely, 2^404442030 is an apocalyptic number.

404442030 is an abundant number, since it is smaller than the sum of its proper divisors (566218914).

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

404442030 is a wasteful number, since it uses less digits than its factorization.

404442030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13481411.

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 404442030 is about 20110.7441433677. The cubic root of 404442030 is about 739.5236951941.

Adding to 404442030 its reverse (30244404), we get a palindrome (434686434).

The spelling of 404442030 in words is "four hundred four million, four hundred forty-two thousand, thirty".