40691171 has 4 divisors (see below), whose sum is σ = 40725000. Its totient is φ = 40657344.

The previous prime is 40691159. The next prime is 40691207. The reversal of 40691171 is 17119604.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40691171 - 2⁶ = 40691107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40691471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15041 + ... + 17538.

It is an arithmetic number, because the mean of its divisors is an integer number (10181250).

Almost surely, 2^40691171 is an apocalyptic number.

40691171 is a deficient number, since it is larger than the sum of its proper divisors (33829).

40691171 is a wasteful number, since it uses less digits than its factorization.

40691171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33828.

The product of its (nonzero) digits is 1512, while the sum is 29.

The square root of 40691171 is about 6378.9631602636. The cubic root of 40691171 is about 343.9537610241.

The spelling of 40691171 in words is "forty million, six hundred ninety-one thousand, one hundred seventy-one".