8418707449 has 4 divisors (see below), whose sum is σ = 8423028900. Its totient is φ = 8414386000.

The previous prime is 8418707431. The next prime is 8418707467. The reversal of 8418707449 is 9447078148.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (8418707431) and next prime (8418707467).

It can be written as a sum of positive squares in 2 ways, for example, as 3844620025 + 4574087424 = 62005^2 + 67632^2 .

It is a cyclic number.

It is not a de Polignac number, because 8418707449 - 2¹⁷ = 8418576377 is a prime.

It is a super-2 number, since 2×8418707449² (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 = 8418707396 and 8418707405.

It is not an unprimeable number, because it can be changed into a prime (8418707419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2157802 + ... + 2161699.

It is an arithmetic number, because the mean of its divisors is an integer number (2105757225).

Almost surely, 2^8418707449 is an apocalyptic number.

It is an amenable number.

8418707449 is a deficient number, since it is larger than the sum of its proper divisors (4321451).

8418707449 is a wasteful number, since it uses less digits than its factorization.

8418707449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4321450.

The product of its (nonzero) digits is 1806336, while the sum is 52.

The square root of 8418707449 is about 91753.5146411297. The cubic root of 8418707449 is about 2034.3006568913.

The spelling of 8418707449 in words is "eight billion, four hundred eighteen million, seven hundred seven thousand, four hundred forty-nine".