22140449 has 2 divisors, whose sum is σ = 22140450. Its totient is φ = 22140448.

The previous prime is 22140439. The next prime is 22140493. The reversal of 22140449 is 94404122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19140625 + 2999824 = 4375^2 + 1732^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22140449 is a prime.

It is not a weakly prime, because it can be changed into another prime (22140439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11070224 + 11070225.

It is an arithmetic number, because the mean of its divisors is an integer number (11070225).

Almost surely, 2^22140449 is an apocalyptic number.

It is an amenable number.

22140449 is a deficient number, since it is larger than the sum of its proper divisors (1).

22140449 is an equidigital number, since it uses as much as digits as its factorization.

22140449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 22140449 is about 4705.3638541562. The cubic root of 22140449 is about 280.7989468728.

The spelling of 22140449 in words is "twenty-two million, one hundred forty thousand, four hundred forty-nine".