40340404 has 12 divisors (see below), whose sum is σ = 76026244. Its totient is φ = 18618624.

The previous prime is 40340387. The next prime is 40340437. The reversal of 40340404 is 40404304.

It can be written as a sum of positive squares in 2 ways, for example, as 25502500 + 14837904 = 5050^2 + 3852^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 387837 + ... + 387940.

Almost surely, 2^40340404 is an apocalyptic number.

It is an amenable number.

40340404 is a deficient number, since it is larger than the sum of its proper divisors (35685840).

40340404 is a wasteful number, since it uses less digits than its factorization.

40340404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775794 (or 775792 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 40340404 is about 6351.4096073234. The cubic root of 40340404 is about 342.9625880368.

Adding to 40340404 its reverse (40404304), we get a palindrome (80744708).

The spelling of 40340404 in words is "forty million, three hundred forty thousand, four hundred four".