9618979 has 4 divisors (see below), whose sum is σ = 9708984. Its totient is φ = 9528976.

The previous prime is 9618967. The next prime is 9619007. The reversal of 9618979 is 9798169.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9618979 - 2¹⁹ = 9094691 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

9618979 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9618079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44842 + ... + 45055.

It is an arithmetic number, because the mean of its divisors is an integer number (2427246).

Almost surely, 2^9618979 is an apocalyptic number.

9618979 is a deficient number, since it is larger than the sum of its proper divisors (90005).

9618979 is a wasteful number, since it uses less digits than its factorization.

9618979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90004.

The product of its digits is 244944, while the sum is 49.

The square root of 9618979 is about 3101.4478876808. The cubic root of 9618979 is about 212.6716785647.

The spelling of 9618979 in words is "nine million, six hundred eighteen thousand, nine hundred seventy-nine".