40159785 has 8 divisors (see below), whose sum is σ = 64255680. Its totient is φ = 21418544.

The previous prime is 40159781. The next prime is 40159793. The reversal of 40159785 is 58795104.

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

It is a cyclic number.

It is not a de Polignac number, because 40159785 - 2² = 40159781 is a prime.

It is a super-2 number, since 2×40159785² = 3225616662492450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40159781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1338645 + ... + 1338674.

It is an arithmetic number, because the mean of its divisors is an integer number (8031960).

Almost surely, 2^40159785 is an apocalyptic number.

It is an amenable number.

40159785 is a deficient number, since it is larger than the sum of its proper divisors (24095895).

40159785 is a wasteful number, since it uses less digits than its factorization.

40159785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2677327.

The product of its (nonzero) digits is 50400, while the sum is 39.

The square root of 40159785 is about 6337.1748437297. The cubic root of 40159785 is about 342.4499651633.

The spelling of 40159785 in words is "forty million, one hundred fifty-nine thousand, seven hundred eighty-five".