9381979 has 4 divisors (see below), whose sum is σ = 9635584. Its totient is φ = 9128376.

The previous prime is 9381949. The next prime is 9381997. The reversal of 9381979 is 9791839.

9381979 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9791839 = 47 ⋅208337.

It is a cyclic number.

It is not a de Polignac number, because 9381979 - 2⁵ = 9381947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9381919) 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, 126747 + ... + 126820.

It is an arithmetic number, because the mean of its divisors is an integer number (2408896).

Almost surely, 2^9381979 is an apocalyptic number.

9381979 is a deficient number, since it is larger than the sum of its proper divisors (253605).

9381979 is a wasteful number, since it uses less digits than its factorization.

9381979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253604.

The product of its digits is 122472, while the sum is 46.

The square root of 9381979 is about 3063.0016323861. The cubic root of 9381979 is about 210.9104761613.

The spelling of 9381979 in words is "nine million, three hundred eighty-one thousand, nine hundred seventy-nine".