8172046249 has 8 divisors (see below), whose sum is σ = 8261208072. Its totient is φ = 8083046400.

The previous prime is 8172046237. The next prime is 8172046297. The reversal of 8172046249 is 9426402718.

It can be written as a sum of positive squares in 4 ways, for example, as 46826649 + 8125219600 = 6843^2 + 90140^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8172046249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8172046219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62377 + ... + 142249.

It is an arithmetic number, because the mean of its divisors is an integer number (1032651009).

Almost surely, 2^8172046249 is an apocalyptic number.

It is an amenable number.

8172046249 is a deficient number, since it is larger than the sum of its proper divisors (89161823).

8172046249 is a wasteful number, since it uses less digits than its factorization.

8172046249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80987.

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 8172046249 is about 90399.3708440496. The cubic root of 8172046249 is about 2014.2356205628.

The spelling of 8172046249 in words is "eight billion, one hundred seventy-two million, forty-six thousand, two hundred forty-nine".