20444719 has 2 divisors, whose sum is σ = 20444720. Its totient is φ = 20444718.

The previous prime is 20444713. The next prime is 20444729. The reversal of 20444719 is 91744402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20444719 - 2¹³ = 20436527 is a prime.

It is a super-2 number, since 2×20444719² = 835973069977922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20444713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10222359 + 10222360.

It is an arithmetic number, because the mean of its divisors is an integer number (10222360).

Almost surely, 2^20444719 is an apocalyptic number.

20444719 is a deficient number, since it is larger than the sum of its proper divisors (1).

20444719 is an equidigital number, since it uses as much as digits as its factorization.

20444719 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 20444719 is about 4521.5836827377. The cubic root of 20444719 is about 273.4389526715.

The spelling of 20444719 in words is "twenty million, four hundred forty-four thousand, seven hundred nineteen".