8376216649 has 4 divisors (see below), whose sum is σ = 8386395136. Its totient is φ = 8366038164.

The previous prime is 8376216623. The next prime is 8376216677. The reversal of 8376216649 is 9466126738.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9466126738 = 2 ⋅4733063369.

It is a cyclic number.

It is not a de Polignac number, because 8376216649 - 2⁹ = 8376216137 is a prime.

It is a super-2 number, since 2×8376216649² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8376216596 and 8376216605.

It is not an unprimeable number, because it can be changed into a prime (8376216689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5088009 + ... + 5089654.

It is an arithmetic number, because the mean of its divisors is an integer number (2096598784).

Almost surely, 2^8376216649 is an apocalyptic number.

It is an amenable number.

8376216649 is a deficient number, since it is larger than the sum of its proper divisors (10178487).

8376216649 is a wasteful number, since it uses less digits than its factorization.

8376216649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10178486.

The product of its digits is 2612736, while the sum is 52.

The square root of 8376216649 is about 91521.6731107993. The cubic root of 8376216649 is about 2030.8723833406.

The spelling of 8376216649 in words is "eight billion, three hundred seventy-six million, two hundred sixteen thousand, six hundred forty-nine".