65044438 has 4 divisors (see below), whose sum is σ = 97566660. Its totient is φ = 32522218.

The previous prime is 65044433. The next prime is 65044451. The reversal of 65044438 is 83444056.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65044433) 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 as a sum of consecutive naturals, namely, 16261108 + ... + 16261111.

It is an arithmetic number, because the mean of its divisors is an integer number (24391665).

Almost surely, 2^65044438 is an apocalyptic number.

65044438 is a deficient number, since it is larger than the sum of its proper divisors (32522222).

65044438 is a wasteful number, since it uses less digits than its factorization.

65044438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32522221.

The product of its (nonzero) digits is 46080, while the sum is 34.

The square root of 65044438 is about 8065.0132051969. The cubic root of 65044438 is about 402.1641821714.

The spelling of 65044438 in words is "sixty-five million, forty-four thousand, four hundred thirty-eight".