43426465 has 16 divisors (see below), whose sum is σ = 53163216. Its totient is φ = 34048000.

The previous prime is 43426463. The next prime is 43426469. The reversal of 43426465 is 56462434.

It can be written as a sum of positive squares in 8 ways, for example, as 8946081 + 34480384 = 2991^2 + 5872^2 .

It is not a de Polignac number, because 43426465 - 2¹ = 43426463 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 43426465.

It is not an unprimeable number, because it can be changed into a prime (43426463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56685 + ... + 57445.

It is an arithmetic number, because the mean of its divisors is an integer number (3322701).

Almost surely, 2^43426465 is an apocalyptic number.

43426465 is the 3805-th octagonal number.

It is an amenable number.

43426465 is a deficient number, since it is larger than the sum of its proper divisors (9736751).

43426465 is a wasteful number, since it uses less digits than its factorization.

43426465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 980.

The product of its digits is 69120, while the sum is 34.

The square root of 43426465 is about 6589.8759472391. The cubic root of 43426465 is about 351.4941970286.

Adding to 43426465 its reverse (56462434), we get a palindrome (99888899).

The spelling of 43426465 in words is "forty-three million, four hundred twenty-six thousand, four hundred sixty-five".