9940369 has 2 divisors, whose sum is σ = 9940370. Its totient is φ = 9940368.

The previous prime is 9940361. The next prime is 9940387. The reversal of 9940369 is 9630499.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5475600 + 4464769 = 2340^2 + 2113^2 .

It is an emirp because it is prime and its reverse (9630499) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9940369 - 2³ = 9940361 is a prime.

It is a super-2 number, since 2×9940369² = 197621871712322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9940361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4970184 + 4970185.

It is an arithmetic number, because the mean of its divisors is an integer number (4970185).

Almost surely, 2^9940369 is an apocalyptic number.

It is an amenable number.

9940369 is a deficient number, since it is larger than the sum of its proper divisors (1).

9940369 is an equidigital number, since it uses as much as digits as its factorization.

9940369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52488, while the sum is 40.

The square root of 9940369 is about 3152.8350733903. The cubic root of 9940369 is about 215.0143779820.

The spelling of 9940369 in words is "nine million, nine hundred forty thousand, three hundred sixty-nine".