40109204 has 12 divisors (see below), whose sum is σ = 72611700. Its totient is φ = 19363008.

The previous prime is 40109197. The next prime is 40109207. The reversal of 40109204 is 40290104.

It can be written as a sum of positive squares in 2 ways, for example, as 34339600 + 5769604 = 5860^2 + 2402^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40109207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172769 + ... + 173000.

It is an arithmetic number, because the mean of its divisors is an integer number (6050975).

Almost surely, 2^40109204 is an apocalyptic number.

It is an amenable number.

40109204 is a deficient number, since it is larger than the sum of its proper divisors (32502496).

40109204 is a wasteful number, since it uses less digits than its factorization.

40109204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345802 (or 345800 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 40109204 is about 6333.1827701401. The cubic root of 40109204 is about 342.3061335593.

Adding to 40109204 its reverse (40290104), we get a palindrome (80399308).

The spelling of 40109204 in words is "forty million, one hundred nine thousand, two hundred four".