40004100 has 54 divisors (see below), whose sum is σ = 125393450. Its totient is φ = 10667520.

The previous prime is 40004089. The next prime is 40004117. The reversal of 40004100 is 140004.

It can be written as a sum of positive squares in 3 ways, for example, as 7650756 + 32353344 = 2766^2 + 5688^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

40004100 is a modest number, since divided by 4100 gives 400 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 21325 + ... + 23124.

Almost surely, 2^40004100 is an apocalyptic number.

It is an amenable number.

40004100 is an abundant number, since it is smaller than the sum of its proper divisors (85389350).

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

40004100 is a wasteful number, since it uses less digits than its factorization.

40004100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44469 (or 44459 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 40004100 is about 6324.8794454914. The cubic root of 40004100 is about 342.0068737718.

Adding to 40004100 its reverse (140004), we get a palindrome (40144104).

It can be divided in two parts, 40004 and 100, that added together give a palindrome (40104).

The spelling of 40004100 in words is "forty million, four thousand, one hundred".