849666898 has 8 divisors (see below), whose sum is σ = 1275127308. Its totient is φ = 424624464.

The previous prime is 849666859. The next prime is 849666901. The reversal of 849666898 is 898666948.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 824436369 + 25230529 = 28713^2 + 5023^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99361 + ... + 107572.

Almost surely, 2^849666898 is an apocalyptic number.

849666898 is a deficient number, since it is larger than the sum of its proper divisors (425460410).

849666898 is a wasteful number, since it uses less digits than its factorization.

849666898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208988.

The product of its digits is 35831808, while the sum is 64.

The square root of 849666898 is about 29149.0462622707. The cubic root of 849666898 is about 947.1444810403.

Subtracting 849666898 from its reverse (898666948), we obtain a triangular number (49000050 = T₉₈₉₉).

The spelling of 849666898 in words is "eight hundred forty-nine million, six hundred sixty-six thousand, eight hundred ninety-eight".