40404133 has 16 divisors (see below), whose sum is σ = 51549696. Its totient is φ = 30749040.

The previous prime is 40404101. The next prime is 40404139. The reversal of 40404133 is 33140404.

It is not a de Polignac number, because 40404133 - 2⁵ = 40404101 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40404133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40404139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2791 + ... + 9412.

It is an arithmetic number, because the mean of its divisors is an integer number (3221856).

Almost surely, 2^40404133 is an apocalyptic number.

40404133 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

It is an amenable number.

40404133 is a deficient number, since it is larger than the sum of its proper divisors (11145563).

40404133 is a wasteful number, since it uses less digits than its factorization.

40404133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12264.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 40404133 is about 6356.4245452927. The cubic root of 40404133 is about 343.1430949324.

Adding to 40404133 its reverse (33140404), we get a palindrome (73544537).

The spelling of 40404133 in words is "forty million, four hundred four thousand, one hundred thirty-three".