889951729 has 2 divisors, whose sum is σ = 889951730. Its totient is φ = 889951728.

The previous prime is 889951709. The next prime is 889951759. The reversal of 889951729 is 927159988.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 788486400 + 101465329 = 28080^2 + 10073^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-889951729 is a prime.

It is not a weakly prime, because it can be changed into another prime (889951709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 444975864 + 444975865.

It is an arithmetic number, because the mean of its divisors is an integer number (444975865).

Almost surely, 2^889951729 is an apocalyptic number.

It is an amenable number.

889951729 is a deficient number, since it is larger than the sum of its proper divisors (1).

889951729 is an equidigital number, since it uses as much as digits as its factorization.

889951729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3265920, while the sum is 58.

The square root of 889951729 is about 29832.0587455844. The cubic root of 889951729 is about 961.8827810749.

The spelling of 889951729 in words is "eight hundred eighty-nine million, nine hundred fifty-one thousand, seven hundred twenty-nine".