40347071 has 4 divisors (see below), whose sum is σ = 40360200. Its totient is φ = 40333944.

The previous prime is 40347067. The next prime is 40347077. The reversal of 40347071 is 17074304.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 40347071 - 2² = 40347067 is a prime.

It is a super-2 number, since 2×40347071² = 3255772276558082, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40347071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40347077) 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 3 ways as a sum of consecutive naturals, for example, 800 + ... + 9018.

It is an arithmetic number, because the mean of its divisors is an integer number (10090050).

Almost surely, 2^40347071 is an apocalyptic number.

40347071 is a deficient number, since it is larger than the sum of its proper divisors (13129).

40347071 is an equidigital number, since it uses as much as digits as its factorization.

40347071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13128.

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 40347071 is about 6351.9344297623. The cubic root of 40347071 is about 342.9814806390.

It can be divided in two parts, 403 and 47071, that added together give a palindrome (47474).

The spelling of 40347071 in words is "forty million, three hundred forty-seven thousand, seventy-one".