8426797649 has 16 divisors (see below), whose sum is σ = 8692427520. Its totient is φ = 8165184000.

The previous prime is 8426797627. The next prime is 8426797663. The reversal of 8426797649 is 9467976248.

It is a cyclic number.

It is not a de Polignac number, because 8426797649 - 2¹² = 8426793553 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8426797591 and 8426797600.

It is not an unprimeable number, because it can be changed into a prime (8426797679) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2038817 + ... + 2042945.

It is an arithmetic number, because the mean of its divisors is an integer number (543276720).

Almost surely, 2^8426797649 is an apocalyptic number.

It is an amenable number.

8426797649 is a deficient number, since it is larger than the sum of its proper divisors (265629871).

8426797649 is a wasteful number, since it uses less digits than its factorization.

8426797649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4600.

The product of its digits is 36578304, while the sum is 62.

The square root of 8426797649 is about 91797.5906492104. The cubic root of 8426797649 is about 2034.9520882497.

The spelling of 8426797649 in words is "eight billion, four hundred twenty-six million, seven hundred ninety-seven thousand, six hundred forty-nine".