40189305 has 32 divisors (see below), whose sum is σ = 70874496. Its totient is φ = 19321344.

The previous prime is 40189297. The next prime is 40189319. The reversal of 40189305 is 50398104.

It is not a de Polignac number, because 40189305 - 2³ = 40189297 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5989 + ... + 10781.

It is an arithmetic number, because the mean of its divisors is an integer number (2214828).

Almost surely, 2^40189305 is an apocalyptic number.

It is an amenable number.

40189305 is a deficient number, since it is larger than the sum of its proper divisors (30685191).

40189305 is a wasteful number, since it uses less digits than its factorization.

40189305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4857.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 40189305 is about 6339.5035294572. The cubic root of 40189305 is about 342.5338521249.

The spelling of 40189305 in words is "forty million, one hundred eighty-nine thousand, three hundred five".