869890898 has 4 divisors (see below), whose sum is σ = 1304836350. Its totient is φ = 434945448.

The previous prime is 869890897. The next prime is 869890913. The reversal of 869890898 is 898098968.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 654182929 + 215707969 = 25577^2 + 14687^2 .

It is a super-3 number, since 3×869890898³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (869890897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217472723 + ... + 217472726.

Almost surely, 2^869890898 is an apocalyptic number.

869890898 is a deficient number, since it is larger than the sum of its proper divisors (434945452).

869890898 is a wasteful number, since it uses less digits than its factorization.

869890898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434945451.

The product of its (nonzero) digits is 17915904, while the sum is 65.

The square root of 869890898 is about 29493.9128974099. The cubic root of 869890898 is about 954.6003638414.

The spelling of 869890898 in words is "eight hundred sixty-nine million, eight hundred ninety thousand, eight hundred ninety-eight".