899195899 has 4 divisors (see below), whose sum is σ = 1027652464. Its totient is φ = 770739336.

The previous prime is 899195897. The next prime is 899195903. The reversal of 899195899 is 998591998.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 998591998 = 2 ⋅499295999.

It is a cyclic number.

It is not a de Polignac number, because 899195899 - 2¹ = 899195897 is a prime.

It is a super-3 number, since 3×899195899³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (899195897) 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, 64228272 + ... + 64228285.

It is an arithmetic number, because the mean of its divisors is an integer number (256913116).

Almost surely, 2^899195899 is an apocalyptic number.

899195899 is a deficient number, since it is larger than the sum of its proper divisors (128456565).

899195899 is a wasteful number, since it uses less digits than its factorization.

899195899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128456564.

The product of its digits is 18895680, while the sum is 67.

The square root of 899195899 is about 29986.5953219101. The cubic root of 899195899 is about 965.2017615302.

The spelling of 899195899 in words is "eight hundred ninety-nine million, one hundred ninety-five thousand, eight hundred ninety-nine".