40171871 has 16 divisors (see below), whose sum is σ = 43464960. Its totient is φ = 37013760.

The previous prime is 40171829. The next prime is 40171883. The reversal of 40171871 is 17817104.

It is a cyclic number.

It is not a de Polignac number, because 40171871 - 2¹⁴ = 40155487 is a prime.

It is a super-2 number, since 2×40171871² = 3227558439281282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40171801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130700 + ... + 131006.

It is an arithmetic number, because the mean of its divisors is an integer number (2716560).

Almost surely, 2^40171871 is an apocalyptic number.

40171871 is a deficient number, since it is larger than the sum of its proper divisors (3293089).

40171871 is a wasteful number, since it uses less digits than its factorization.

40171871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494.

The product of its (nonzero) digits is 1568, while the sum is 29.

The square root of 40171871 is about 6338.1283514930. The cubic root of 40171871 is about 342.4843149085.

Adding to 40171871 its reverse (17817104), we get a palindrome (57988975).

The spelling of 40171871 in words is "forty million, one hundred seventy-one thousand, eight hundred seventy-one".