890111111099 has 8 divisors (see below), whose sum is σ = 1017279875040. Its totient is φ = 762944855616.

The previous prime is 890111111077. The next prime is 890111111107. The reversal of 890111111099 is 990111111098.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-890111111099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (890111111039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207287 + ... + 1350255.

It is an arithmetic number, because the mean of its divisors is an integer number (127159984380).

Almost surely, 2^890111111099 is an apocalyptic number.

890111111099 is a deficient number, since it is larger than the sum of its proper divisors (127168763941).

890111111099 is a wasteful number, since it uses less digits than its factorization.

890111111099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1254229.

The product of its (nonzero) digits is 5832, while the sum is 41.

Subtracting 890111111099 from its reverse (990111111098), we obtain a palindrome (99999999999).

The spelling of 890111111099 in words is "eight hundred ninety billion, one hundred eleven million, one hundred eleven thousand, ninety-nine".