40340406 has 16 divisors (see below), whose sum is σ = 80766144. Its totient is φ = 13432584.

The previous prime is 40340387. The next prime is 40340437. The reversal of 40340406 is 60404304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3745 + ... + 9731.

It is an arithmetic number, because the mean of its divisors is an integer number (5047884).

Almost surely, 2^40340406 is an apocalyptic number.

40340406 is an abundant number, since it is smaller than the sum of its proper divisors (40425738).

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

40340406 is a wasteful number, since it uses less digits than its factorization.

40340406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7115.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 40340406 is about 6351.4097647688. The cubic root of 40340406 is about 342.9625937046.

The spelling of 40340406 in words is "forty million, three hundred forty thousand, four hundred six".