698417449 has 2 divisors, whose sum is σ = 698417450. Its totient is φ = 698417448.

The previous prime is 698417441. The next prime is 698417453. The reversal of 698417449 is 944714896.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 484000000 + 214417449 = 22000^2 + 14643^2 .

It is a cyclic number.

It is not a de Polignac number, because 698417449 - 2³ = 698417441 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 698417396 and 698417405.

It is not a weakly prime, because it can be changed into another prime (698417441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349208724 + 349208725.

It is an arithmetic number, because the mean of its divisors is an integer number (349208725).

Almost surely, 2^698417449 is an apocalyptic number.

It is an amenable number.

698417449 is a deficient number, since it is larger than the sum of its proper divisors (1).

698417449 is an equidigital number, since it uses as much as digits as its factorization.

698417449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1741824, while the sum is 52.

The square root of 698417449 is about 26427.5887852070. The cubic root of 698417449 is about 887.2343762114.

The spelling of 698417449 in words is "six hundred ninety-eight million, four hundred seventeen thousand, four hundred forty-nine".