9911139 has 8 divisors (see below), whose sum is σ = 15102720. Its totient is φ = 5663496.

The previous prime is 9911131. The next prime is 9911147. The reversal of 9911139 is 9311199.

It is an interprime number because it is at equal distance from previous prime (9911131) and next prime (9911147).

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

It is not a de Polignac number, because 9911139 - 2³ = 9911131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9911131) 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, 235959 + ... + 236000.

It is an arithmetic number, because the mean of its divisors is an integer number (1887840).

Almost surely, 2^9911139 is an apocalyptic number.

9911139 is a deficient number, since it is larger than the sum of its proper divisors (5191581).

9911139 is a wasteful number, since it uses less digits than its factorization.

9911139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471969.

The product of its digits is 2187, while the sum is 33.

The square root of 9911139 is about 3148.1961501787. The cubic root of 9911139 is about 214.8034186556.

The spelling of 9911139 in words is "nine million, nine hundred eleven thousand, one hundred thirty-nine".