40591671 has 4 divisors (see below), whose sum is σ = 54122232. Its totient is φ = 27061112.

The previous prime is 40591667. The next prime is 40591697. The reversal of 40591671 is 17619504.

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 40591671 - 2² = 40591667 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40591601) 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, 6765276 + ... + 6765281.

It is an arithmetic number, because the mean of its divisors is an integer number (13530558).

Almost surely, 2^40591671 is an apocalyptic number.

40591671 is a deficient number, since it is larger than the sum of its proper divisors (13530561).

40591671 is a wasteful number, since it uses less digits than its factorization.

40591671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13530560.

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 40591671 is about 6371.1593136571. The cubic root of 40591671 is about 343.6731814681.

The spelling of 40591671 in words is "forty million, five hundred ninety-one thousand, six hundred seventy-one".