40065371 has 4 divisors (see below), whose sum is σ = 40629744. Its totient is φ = 39501000.

The previous prime is 40065367. The next prime is 40065407. The reversal of 40065371 is 17356004.

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 40065371 - 2² = 40065367 is a prime.

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 40065371.

It is not an unprimeable number, because it can be changed into a prime (40065341) 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, 282080 + ... + 282221.

It is an arithmetic number, because the mean of its divisors is an integer number (10157436).

Almost surely, 2^40065371 is an apocalyptic number.

40065371 is a deficient number, since it is larger than the sum of its proper divisors (564373).

40065371 is an equidigital number, since it uses as much as digits as its factorization.

40065371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564372.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 40065371 is about 6329.7212418874. The cubic root of 40065371 is about 342.1813926657.

The spelling of 40065371 in words is "forty million, sixty-five thousand, three hundred seventy-one".