8349025129 has 3 divisors (see below), whose sum is σ = 8349116503. Its totient is φ = 8348933756.

The previous prime is 8349025079. The next prime is 8349025147. The reversal of 8349025129 is 9215209438.

The square root of 8349025129 is 91373.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 8287371225 + 61653904 = 91035^2 + 7852^2 .

It is not a de Polignac number, because 8349025129 - 2⁹ = 8349024617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8349025169) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 45687 + ... + 137059.

Almost surely, 2^8349025129 is an apocalyptic number.

8349025129 is the 91373-rd square number.

8349025129 is the 45687-th centered octagonal number.

It is an amenable number.

8349025129 is a deficient number, since it is larger than the sum of its proper divisors (91374).

8349025129 is an frugal number, since it uses more digits than its factorization.

8349025129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182746 (or 91373 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 43.

The cubic root of 8349025129 is about 2028.6724095656.

The spelling of 8349025129 in words is "eight billion, three hundred forty-nine million, twenty-five thousand, one hundred twenty-nine".