44640289 has 2 divisors, whose sum is σ = 44640290. Its totient is φ = 44640288.

The previous prime is 44640259. The next prime is 44640301. The reversal of 44640289 is 98204644.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42771600 + 1868689 = 6540^2 + 1367^2 .

It is a cyclic number.

It is not a de Polignac number, because 44640289 - 2⁷ = 44640161 is a prime.

It is not a weakly prime, because it can be changed into another prime (44640229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22320144 + 22320145.

It is an arithmetic number, because the mean of its divisors is an integer number (22320145).

Almost surely, 2^44640289 is an apocalyptic number.

It is an amenable number.

44640289 is a deficient number, since it is larger than the sum of its proper divisors (1).

44640289 is an equidigital number, since it uses as much as digits as its factorization.

44640289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55296, while the sum is 37.

The square root of 44640289 is about 6681.3388628328. The cubic root of 44640289 is about 354.7390504449.

The spelling of 44640289 in words is "forty-four million, six hundred forty thousand, two hundred eighty-nine".