8400880049 has 2 divisors, whose sum is σ = 8400880050. Its totient is φ = 8400880048.

The previous prime is 8400880043. The next prime is 8400880087. The reversal of 8400880049 is 9400880048.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5530599424 + 2870280625 = 74368^2 + 53575^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8400880049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8400879988 and 8400880015.

It is not a weakly prime, because it can be changed into another prime (8400880043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4200440024 + 4200440025.

It is an arithmetic number, because the mean of its divisors is an integer number (4200440025).

Almost surely, 2^8400880049 is an apocalyptic number.

It is an amenable number.

8400880049 is a deficient number, since it is larger than the sum of its proper divisors (1).

8400880049 is an equidigital number, since it uses as much as digits as its factorization.

8400880049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 73728, while the sum is 41.

The square root of 8400880049 is about 91656.3148342764. The cubic root of 8400880049 is about 2032.8637015156.

Subtracting 8400880049 from its reverse (9400880048), we obtain a palindrome (999999999).

The spelling of 8400880049 in words is "eight billion, four hundred million, eight hundred eighty thousand, forty-nine".