40404007404 has 36 divisors (see below), whose sum is σ = 104305385184. Its totient is φ = 13181448672.

The previous prime is 40404007351. The next prime is 40404007409. The reversal of 40404007404 is 40470040404.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (40404007409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11938027 + ... + 11941410.

Almost surely, 2^40404007404 is an apocalyptic number.

It is an amenable number.

40404007404 is an abundant number, since it is smaller than the sum of its proper divisors (63901377780).

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

40404007404 is a wasteful number, since it uses less digits than its factorization.

40404007404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23879494 (or 23879489 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 27.

Adding to 40404007404 its reverse (40470040404), we get a palindrome (80874047808).

The spelling of 40404007404 in words is "forty billion, four hundred four million, seven thousand, four hundred four".