40231606 has 4 divisors (see below), whose sum is σ = 60347412. Its totient is φ = 20115802.

The previous prime is 40231603. The next prime is 40231637. The reversal of 40231606 is 60613204.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40231601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10057900 + ... + 10057903.

It is an arithmetic number, because the mean of its divisors is an integer number (15086853).

Almost surely, 2^40231606 is an apocalyptic number.

40231606 is a deficient number, since it is larger than the sum of its proper divisors (20115806).

40231606 is a wasteful number, since it uses less digits than its factorization.

40231606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20115805.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 40231606 is about 6342.8389542854. The cubic root of 40231606 is about 342.6539872689.

The spelling of 40231606 in words is "forty million, two hundred thirty-one thousand, six hundred six".