40085171 has 8 divisors (see below), whose sum is σ = 47050080. Its totient is φ = 33429888.

The previous prime is 40085107. The next prime is 40085173. The reversal of 40085171 is 17158004.

40085171 = 2390² + 2391² + ... + 2396².

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 40085171 - 2⁶ = 40085107 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40085171.

It is not an unprimeable number, because it can be changed into a prime (40085173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77126 + ... + 77643.

It is an arithmetic number, because the mean of its divisors is an integer number (5881260).

Almost surely, 2^40085171 is an apocalyptic number.

40085171 is a deficient number, since it is larger than the sum of its proper divisors (6964909).

40085171 is a wasteful number, since it uses less digits than its factorization.

40085171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154813.

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 40085171 is about 6331.2850986194. The cubic root of 40085171 is about 342.2377511920.

The spelling of 40085171 in words is "forty million, eighty-five thousand, one hundred seventy-one".