898601989 has 2 divisors, whose sum is σ = 898601990. Its totient is φ = 898601988.

The previous prime is 898601971. The next prime is 898602007. The reversal of 898601989 is 989106898.

It is a balanced prime because it is at equal distance from previous prime (898601971) and next prime (898602007).

It can be written as a sum of positive squares in only one way, i.e., 596189889 + 302412100 = 24417^2 + 17390^2 .

It is a cyclic number.

It is not a de Polignac number, because 898601989 - 2²⁹ = 361731077 is a prime.

It is a super-2 number, since 2×898601989² = 1614971069269512242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (898601959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 449300994 + 449300995.

It is an arithmetic number, because the mean of its divisors is an integer number (449300995).

Almost surely, 2^898601989 is an apocalyptic number.

It is an amenable number.

898601989 is a deficient number, since it is larger than the sum of its proper divisors (1).

898601989 is an equidigital number, since it uses as much as digits as its factorization.

898601989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2239488, while the sum is 58.

The square root of 898601989 is about 29976.6907613232. The cubic root of 898601989 is about 964.9892126547.

The spelling of 898601989 in words is "eight hundred ninety-eight million, six hundred one thousand, nine hundred eighty-nine".