9966379 has 4 divisors (see below), whose sum is σ = 9979480. Its totient is φ = 9953280.

The previous prime is 9966371. The next prime is 9966389. The reversal of 9966379 is 9736699.

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 9966379 - 2³ = 9966371 is a prime.

It is a d-powerful number, because it can be written as 9⁵ + 9⁵ + 6 + 6⁷ + 3¹⁴ + 7⁴ + 9⁷ .

It is a Duffinian number.

9966379 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9966371) 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, 5334 + ... + 6955.

It is an arithmetic number, because the mean of its divisors is an integer number (2494870).

Almost surely, 2^9966379 is an apocalyptic number.

9966379 is a deficient number, since it is larger than the sum of its proper divisors (13101).

9966379 is a wasteful number, since it uses less digits than its factorization.

9966379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13100.

The product of its digits is 551124, while the sum is 49.

The square root of 9966379 is about 3156.9572375945. The cubic root of 9966379 is about 215.2017504107.

The spelling of 9966379 in words is "nine million, nine hundred sixty-six thousand, three hundred seventy-nine".