40099646 has 8 divisors (see below), whose sum is σ = 60217680. Its totient is φ = 20027088.

The previous prime is 40099643. The next prime is 40099669. The reversal of 40099646 is 64699004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40099643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9071 + ... + 12746.

It is an arithmetic number, because the mean of its divisors is an integer number (7527210).

Almost surely, 2^40099646 is an apocalyptic number.

40099646 is a deficient number, since it is larger than the sum of its proper divisors (20118034).

40099646 is a wasteful number, since it uses less digits than its factorization.

40099646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22738.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 40099646 is about 6332.4281282933. The cubic root of 40099646 is about 342.2789409483.

The spelling of 40099646 in words is "forty million, ninety-nine thousand, six hundred forty-six".