9890111711 has 8 divisors (see below), whose sum is σ = 10325796864. Its totient is φ = 9454899960.

The previous prime is 9890111689. The next prime is 9890111783. The reversal of 9890111711 is 1171110989.

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 not a de Polignac number, because 9890111711 - 2²² = 9885917407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9890114711) 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, 75311 + ... + 159536.

It is an arithmetic number, because the mean of its divisors is an integer number (1290724608).

Almost surely, 2^9890111711 is an apocalyptic number.

9890111711 is a deficient number, since it is larger than the sum of its proper divisors (435685153).

9890111711 is a wasteful number, since it uses less digits than its factorization.

9890111711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236701.

The product of its (nonzero) digits is 4536, while the sum is 38.

The square root of 9890111711 is about 99449.0407746601. The cubic root of 9890111711 is about 2146.5140344870.

The spelling of 9890111711 in words is "nine billion, eight hundred ninety million, one hundred eleven thousand, seven hundred eleven".