44639393 has 2 divisors, whose sum is σ = 44639394. Its totient is φ = 44639392.

The previous prime is 44639377. The next prime is 44639443. The reversal of 44639393 is 39393644.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28058209 + 16581184 = 5297^2 + 4072^2 .

It is a cyclic number.

It is not a de Polignac number, because 44639393 - 2⁴ = 44639377 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 44639393.

It is not a weakly prime, because it can be changed into another prime (44639293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22319696 + 22319697.

It is an arithmetic number, because the mean of its divisors is an integer number (22319697).

Almost surely, 2^44639393 is an apocalyptic number.

It is an amenable number.

44639393 is a deficient number, since it is larger than the sum of its proper divisors (1).

44639393 is an equidigital number, since it uses as much as digits as its factorization.

44639393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 209952, while the sum is 41.

The square root of 44639393 is about 6681.2718100673. The cubic root of 44639393 is about 354.7366770409.

The spelling of 44639393 in words is "forty-four million, six hundred thirty-nine thousand, three hundred ninety-three".