9394725139 has 2 divisors, whose sum is σ = 9394725140. Its totient is φ = 9394725138.

The previous prime is 9394725133. The next prime is 9394725191. The reversal of 9394725139 is 9315274939.

It is a happy number.

It is an a-pointer prime, because the next prime (9394725191) can be obtained adding 9394725139 to its sum of digits (52).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9394725139 - 2¹⁷ = 9394594067 is a prime.

It is not a weakly prime, because it can be changed into another prime (9394725133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4697362569 + 4697362570.

It is an arithmetic number, because the mean of its divisors is an integer number (4697362570).

Almost surely, 2^9394725139 is an apocalyptic number.

9394725139 is a deficient number, since it is larger than the sum of its proper divisors (1).

9394725139 is an equidigital number, since it uses as much as digits as its factorization.

9394725139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1837080, while the sum is 52.

The square root of 9394725139 is about 96926.3903124428. The cubic root of 9394725139 is about 2110.0594563332.

The spelling of 9394725139 in words is "nine billion, three hundred ninety-four million, seven hundred twenty-five thousand, one hundred thirty-nine".