40709871 has 10 divisors (see below), whose sum is σ = 60813632. Its totient is φ = 27139860.

The previous prime is 40709869. The next prime is 40709897. The reversal of 40709871 is 17890704.

It is not a de Polignac number, because 40709871 - 2¹ = 40709869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40709821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 251215 + ... + 251376.

Almost surely, 2^40709871 is an apocalyptic number.

40709871 is a deficient number, since it is larger than the sum of its proper divisors (20103761).

40709871 is an equidigital number, since it uses as much as digits as its factorization.

40709871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502603 (or 502594 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 40709871 is about 6380.4287473492. The cubic root of 40709871 is about 344.0064419877.

The spelling of 40709871 in words is "forty million, seven hundred nine thousand, eight hundred seventy-one".