898949899 has 4 divisors (see below), whose sum is σ = 900167080. Its totient is φ = 897732720.

The previous prime is 898949897. The next prime is 898949911. The reversal of 898949899 is 998949898.

898949899 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 998949898 = 2 ⋅499474949.

It is a cyclic number.

It is not a de Polignac number, because 898949899 - 2¹ = 898949897 is a prime.

It is a super-2 number, since 2×898949899² = 1616221841824220402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (898949893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 607482 + ... + 608959.

It is an arithmetic number, because the mean of its divisors is an integer number (225041770).

Almost surely, 2^898949899 is an apocalyptic number.

898949899 is a deficient number, since it is larger than the sum of its proper divisors (1217181).

898949899 is a wasteful number, since it uses less digits than its factorization.

898949899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1217180.

The product of its digits is 120932352, while the sum is 73.

The square root of 898949899 is about 29982.4932085375. The cubic root of 898949899 is about 965.1137342570.

Subtracting 898949899 from its reverse (998949898), we obtain a palindrome (99999999).

The spelling of 898949899 in words is "eight hundred ninety-eight million, nine hundred forty-nine thousand, eight hundred ninety-nine".