889817449 has 2 divisors, whose sum is σ = 889817450. Its totient is φ = 889817448.

The previous prime is 889817393. The next prime is 889817473. The reversal of 889817449 is 944718988.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 584092224 + 305725225 = 24168^2 + 17485^2 .

It is a cyclic number.

It is not a de Polignac number, because 889817449 - 2⁷ = 889817321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 889817393 and 889817402.

It is not a weakly prime, because it can be changed into another prime (889817749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 444908724 + 444908725.

It is an arithmetic number, because the mean of its divisors is an integer number (444908725).

Almost surely, 2^889817449 is an apocalyptic number.

It is an amenable number.

889817449 is a deficient number, since it is larger than the sum of its proper divisors (1).

889817449 is an equidigital number, since it uses as much as digits as its factorization.

889817449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4644864, while the sum is 58.

The square root of 889817449 is about 29829.8080617358. The cubic root of 889817449 is about 961.8344008791.

The spelling of 889817449 in words is "eight hundred eighty-nine million, eight hundred seventeen thousand, four hundred forty-nine".