40407404 has 36 divisors (see below), whose sum is σ = 74694816. Its totient is φ = 19116864.

The previous prime is 40407403. The next prime is 40407407. The reversal of 40407404 is 40470404.

It is a self number, because there is not a number n which added to its sum of digits gives 40407404.

It is not an unprimeable number, because it can be changed into a prime (40407403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 257294 + ... + 257450.

It is an arithmetic number, because the mean of its divisors is an integer number (2074856).

Almost surely, 2^40407404 is an apocalyptic number.

It is an amenable number.

40407404 is a deficient number, since it is larger than the sum of its proper divisors (34287412).

40407404 is a wasteful number, since it uses less digits than its factorization.

40407404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282 (or 243 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 23.

The square root of 40407404 is about 6356.6818388213. The cubic root of 40407404 is about 343.1523546351.

Adding to 40407404 its reverse (40470404), we get a palindrome (80877808).

The spelling of 40407404 in words is "forty million, four hundred seven thousand, four hundred four".