404145104 has 40 divisors (see below), whose sum is σ = 872408448. Its totient is φ = 179790080.

The previous prime is 404145101. The next prime is 404145149. The reversal of 404145104 is 401541404.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 404145104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404145101) 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, 16157 + ... + 32700.

Almost surely, 2^404145104 is an apocalyptic number.

404145104 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

404145104 is an abundant number, since it is smaller than the sum of its proper divisors (468263344).

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

404145104 is a wasteful number, since it uses less digits than its factorization.

404145104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48923 (or 48917 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 404145104 is about 20103.3605150980. The cubic root of 404145104 is about 739.3426741371.

Adding to 404145104 its reverse (401541404), we get a palindrome (805686508).

The spelling of 404145104 in words is "four hundred four million, one hundred forty-five thousand, one hundred four".