9917479 has 16 divisors (see below), whose sum is σ = 11741184. Its totient is φ = 8258400.

The previous prime is 9917473. The next prime is 9917483. The reversal of 9917479 is 9747199.

9917479 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 9917479 - 2³ = 9917471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9917471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31734 + ... + 32044.

It is an arithmetic number, because the mean of its divisors is an integer number (733824).

Almost surely, 2^9917479 is an apocalyptic number.

9917479 is a deficient number, since it is larger than the sum of its proper divisors (1823705).

9917479 is a wasteful number, since it uses less digits than its factorization.

9917479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558.

The product of its digits is 142884, while the sum is 46.

The square root of 9917479 is about 3149.2029150247. The cubic root of 9917479 is about 214.8492110176.

It can be divided in two parts, 99 and 17479, that added together give a triangular number (17578 = T₁₈₇).

The spelling of 9917479 in words is "nine million, nine hundred seventeen thousand, four hundred seventy-nine".