40404105 has 48 divisors (see below), whose sum is σ = 82817280. Its totient is φ = 17829504.

The previous prime is 40404101. The next prime is 40404139. The reversal of 40404105 is 50140404.

It is not a de Polignac number, because 40404105 - 2² = 40404101 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40404101) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6924 + ... + 11346.

It is an arithmetic number, because the mean of its divisors is an integer number (1725360).

Almost surely, 2^40404105 is an apocalyptic number.

40404105 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40404105 is an abundant number, since it is smaller than the sum of its proper divisors (42413175).

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

40404105 is a wasteful number, since it uses less digits than its factorization.

40404105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4470 (or 4467 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 40404105 is about 6356.4223427963. The cubic root of 40404105 is about 343.1430156665.

Adding to 40404105 its reverse (50140404), we get a palindrome (90544509).

The spelling of 40404105 in words is "forty million, four hundred four thousand, one hundred five".