20044447 has 2 divisors, whose sum is σ = 20044448. Its totient is φ = 20044446.

The previous prime is 20044397. The next prime is 20044459. The reversal of 20044447 is 74444002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20044447 - 2⁷ = 20044319 is a prime.

It is equal to p_1273273 and since 20044447 and 1273273 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20044147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10022223 + 10022224.

It is an arithmetic number, because the mean of its divisors is an integer number (10022224).

Almost surely, 2^20044447 is an apocalyptic number.

20044447 is a deficient number, since it is larger than the sum of its proper divisors (1).

20044447 is an equidigital number, since it uses as much as digits as its factorization.

20044447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3584, while the sum is 25.

The square root of 20044447 is about 4477.1025228377. The cubic root of 20044447 is about 271.6426924198.

Adding to 20044447 its reverse (74444002), we get a palindrome (94488449).

The spelling of 20044447 in words is "twenty million, forty-four thousand, four hundred forty-seven".