64244441 has 4 divisors (see below), whose sum is σ = 65611392. Its totient is φ = 62877492.

The previous prime is 64244423. The next prime is 64244461. The reversal of 64244441 is 14444246.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14444246 = 2 ⋅7222123.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64244441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64244461) 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, 683405 + ... + 683498.

It is an arithmetic number, because the mean of its divisors is an integer number (16402848).

Almost surely, 2^64244441 is an apocalyptic number.

It is an amenable number.

64244441 is a deficient number, since it is larger than the sum of its proper divisors (1366951).

64244441 is a wasteful number, since it uses less digits than its factorization.

64244441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1366950.

The product of its digits is 12288, while the sum is 29.

The square root of 64244441 is about 8015.2630025471. The cubic root of 64244441 is about 400.5086051113.

Adding to 64244441 its reverse (14444246), we get a palindrome (78688687).

The spelling of 64244441 in words is "sixty-four million, two hundred forty-four thousand, four hundred forty-one".