40400041 has 16 divisors (see below), whose sum is σ = 47934720. Its totient is φ = 33626880.

The previous prime is 40400033. The next prime is 40400053. The reversal of 40400041 is 14000404.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 40400041 - 2³ = 40400033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40399994 and 40400030.

It is not an unprimeable number, because it can be changed into a prime (40400011) 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, 4000 + ... + 9838.

It is an arithmetic number, because the mean of its divisors is an integer number (2995920).

Almost surely, 2^40400041 is an apocalyptic number.

It is an amenable number.

40400041 is a deficient number, since it is larger than the sum of its proper divisors (7534679).

40400041 is a wasteful number, since it uses less digits than its factorization.

40400041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5904.

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 40400041 is about 6356.1026580759. The cubic root of 40400041 is about 343.1315104001.

Adding to 40400041 its reverse (14000404), we get a palindrome (54400445).

The spelling of 40400041 in words is "forty million, four hundred thousand, forty-one".