8351787449 has 4 divisors (see below), whose sum is σ = 8352872436. Its totient is φ = 8350702464.

The previous prime is 8351787443. The next prime is 8351787503. The reversal of 8351787449 is 9447871538.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8106301225 + 245486224 = 90035^2 + 15668^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8351787449 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8351787394 and 8351787403.

It is not an unprimeable number, because it can be changed into a prime (8351787443) 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 3 ways as a sum of consecutive naturals, for example, 530864 + ... + 546369.

It is an arithmetic number, because the mean of its divisors is an integer number (2088218109).

Almost surely, 2^8351787449 is an apocalyptic number.

It is an amenable number.

8351787449 is a deficient number, since it is larger than the sum of its proper divisors (1084987).

8351787449 is a wasteful number, since it uses less digits than its factorization.

8351787449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1084986.

The product of its digits is 6773760, while the sum is 56.

The square root of 8351787449 is about 91388.1143749011. The cubic root of 8351787449 is about 2028.8961172990.

The spelling of 8351787449 in words is "eight billion, three hundred fifty-one million, seven hundred eighty-seven thousand, four hundred forty-nine".