44638369 has 2 divisors, whose sum is σ = 44638370. Its totient is φ = 44638368.

The previous prime is 44638361. The next prime is 44638387. The reversal of 44638369 is 96383644.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32353344 + 12285025 = 5688^2 + 3505^2 .

It is a cyclic number.

It is not a de Polignac number, because 44638369 - 2³ = 44638361 is a prime.

It is a super-2 number, since 2×44638369² = 3985167973960322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (44638361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22319184 + 22319185.

It is an arithmetic number, because the mean of its divisors is an integer number (22319185).

Almost surely, 2^44638369 is an apocalyptic number.

It is an amenable number.

44638369 is a deficient number, since it is larger than the sum of its proper divisors (1).

44638369 is an equidigital number, since it uses as much as digits as its factorization.

44638369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 373248, while the sum is 43.

The square root of 44638369 is about 6681.1951775113. The cubic root of 44638369 is about 354.7339645404.

The spelling of 44638369 in words is "forty-four million, six hundred thirty-eight thousand, three hundred sixty-nine".