9917139 has 8 divisors (see below), whose sum is σ = 13420480. Its totient is φ = 6512616.

The previous prime is 9917129. The next prime is 9917153. The reversal of 9917139 is 9317199.

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

It is a de Polignac number, because none of the positive numbers 2^k-9917139 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9917097 and 9917106.

It is not an unprimeable number, because it can be changed into a prime (9917119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24469 + ... + 24870.

It is an arithmetic number, because the mean of its divisors is an integer number (1677560).

Almost surely, 2^9917139 is an apocalyptic number.

9917139 is a deficient number, since it is larger than the sum of its proper divisors (3503341).

9917139 is a wasteful number, since it uses less digits than its factorization.

9917139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49409.

The product of its digits is 15309, while the sum is 39.

The square root of 9917139 is about 3149.1489326483. The cubic root of 9917139 is about 214.8467557711.

The spelling of 9917139 in words is "nine million, nine hundred seventeen thousand, one hundred thirty-nine".