898861329749 has 2 divisors, whose sum is σ = 898861329750. Its totient is φ = 898861329748.

The previous prime is 898861329733. The next prime is 898861329833. The reversal of 898861329749 is 947923168898.

898861329749 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 880688402500 + 18172927249 = 938450^2 + 134807^2 .

It is a cyclic number.

It is not a de Polignac number, because 898861329749 - 2⁴ = 898861329733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (898861329449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 449430664874 + 449430664875.

It is an arithmetic number, because the mean of its divisors is an integer number (449430664875).

Almost surely, 2^898861329749 is an apocalyptic number.

It is an amenable number.

898861329749 is a deficient number, since it is larger than the sum of its proper divisors (1).

898861329749 is an equidigital number, since it uses as much as digits as its factorization.

898861329749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 376233984, while the sum is 74.

The spelling of 898861329749 in words is "eight hundred ninety-eight billion, eight hundred sixty-one million, three hundred twenty-nine thousand, seven hundred forty-nine".