898949897 has 2 divisors, whose sum is σ = 898949898. Its totient is φ = 898949896.

The previous prime is 898949893. The next prime is 898949911. The reversal of 898949897 is 798949898.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 893950201 + 4999696 = 29899^2 + 2236^2 .

It is a cyclic number.

It is not a de Polignac number, because 898949897 - 2² = 898949893 is a prime.

It is a super-2 number, since 2×898949897² = 1616221834632621218, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 898949897.

It is not a weakly prime, because it can be changed into another prime (898949893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 449474948 + 449474949.

It is an arithmetic number, because the mean of its divisors is an integer number (449474949).

Almost surely, 2^898949897 is an apocalyptic number.

It is an amenable number.

898949897 is a deficient number, since it is larger than the sum of its proper divisors (1).

898949897 is an equidigital number, since it uses as much as digits as its factorization.

898949897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 94058496, while the sum is 71.

The square root of 898949897 is about 29982.4931751847. The cubic root of 898949897 is about 965.1137335412.

Subtracting from 898949897 its reverse (798949898), we obtain a palindrome (99999999).

The spelling of 898949897 in words is "eight hundred ninety-eight million, nine hundred forty-nine thousand, eight hundred ninety-seven".