40107965 has 4 divisors (see below), whose sum is σ = 48129564. Its totient is φ = 32086368.

The previous prime is 40107959. The next prime is 40107979. The reversal of 40107965 is 56970104.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 31663129 + 8444836 = 5627^2 + 2906^2 .

It is a cyclic number.

It is not a de Polignac number, because 40107965 - 2¹⁴ = 40091581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4010792 + ... + 4010801.

It is an arithmetic number, because the mean of its divisors is an integer number (12032391).

Almost surely, 2^40107965 is an apocalyptic number.

It is an amenable number.

40107965 is a deficient number, since it is larger than the sum of its proper divisors (8021599).

40107965 is an equidigital number, since it uses as much as digits as its factorization.

40107965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8021598.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 40107965 is about 6333.0849512698. The cubic root of 40107965 is about 342.3026088349.

The spelling of 40107965 in words is "forty million, one hundred seven thousand, nine hundred sixty-five".