9139389379 has 2 divisors, whose sum is σ = 9139389380. Its totient is φ = 9139389378.

The previous prime is 9139389349. The next prime is 9139389433. The reversal of 9139389379 is 9739839319.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9139389379 - 2³¹ = 6991905731 is a prime.

It is not a weakly prime, because it can be changed into another prime (9139389349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4569694689 + 4569694690.

It is an arithmetic number, because the mean of its divisors is an integer number (4569694690).

Almost surely, 2^9139389379 is an apocalyptic number.

9139389379 is a deficient number, since it is larger than the sum of its proper divisors (1).

9139389379 is an equidigital number, since it uses as much as digits as its factorization.

9139389379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9920232, while the sum is 61.

The square root of 9139389379 is about 95600.1536557343. The cubic root of 9139389379 is about 2090.7674340331.

The spelling of 9139389379 in words is "nine billion, one hundred thirty-nine million, three hundred eighty-nine thousand, three hundred seventy-nine".