9970139 has 2 divisors, whose sum is σ = 9970140. Its totient is φ = 9970138.

The previous prime is 9970123. The next prime is 9970141. The reversal of 9970139 is 9310799.

It is a happy number.

9970139 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9970139 - 2⁴ = 9970123 is a prime.

Together with 9970141, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9970159) 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, 4985069 + 4985070.

It is an arithmetic number, because the mean of its divisors is an integer number (4985070).

Almost surely, 2^9970139 is an apocalyptic number.

9970139 is a deficient number, since it is larger than the sum of its proper divisors (1).

9970139 is an equidigital number, since it uses as much as digits as its factorization.

9970139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15309, while the sum is 38.

The square root of 9970139 is about 3157.5526915635. The cubic root of 9970139 is about 215.2288099491.

The spelling of 9970139 in words is "nine million, nine hundred seventy thousand, one hundred thirty-nine".