9972379 has 2 divisors, whose sum is σ = 9972380. Its totient is φ = 9972378.

The previous prime is 9972377. The next prime is 9972383. The reversal of 9972379 is 9732799.

It is a weak prime.

It is an emirp because it is prime and its reverse (9732799) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9972379 - 2¹ = 9972377 is a prime.

Together with 9972377, it forms a pair of twin primes.

It is a Chen prime.

9972379 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (9972377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4986189 + 4986190.

It is an arithmetic number, because the mean of its divisors is an integer number (4986190).

Almost surely, 2^9972379 is an apocalyptic number.

9972379 is a deficient number, since it is larger than the sum of its proper divisors (1).

9972379 is an equidigital number, since it uses as much as digits as its factorization.

9972379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 214326, while the sum is 46.

The square root of 9972379 is about 3157.9073767291. The cubic root of 9972379 is about 215.2449272916.

The spelling of 9972379 in words is "nine million, nine hundred seventy-two thousand, three hundred seventy-nine".