655847449 has 2 divisors, whose sum is σ = 655847450. Its totient is φ = 655847448.

The previous prime is 655847429. The next prime is 655847473. The reversal of 655847449 is 944748556.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 435473424 + 220374025 = 20868^2 + 14845^2 .

It is a cyclic number.

It is not a de Polignac number, because 655847449 - 2⁷ = 655847321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 655847396 and 655847405.

It is not a weakly prime, because it can be changed into another prime (655847419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327923724 + 327923725.

It is an arithmetic number, because the mean of its divisors is an integer number (327923725).

Almost surely, 2^655847449 is an apocalyptic number.

It is an amenable number.

655847449 is a deficient number, since it is larger than the sum of its proper divisors (1).

655847449 is an equidigital number, since it uses as much as digits as its factorization.

655847449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4838400, while the sum is 52.

The square root of 655847449 is about 25609.5187186327. The cubic root of 655847449 is about 868.8289387822.

The spelling of 655847449 in words is "six hundred fifty-five million, eight hundred forty-seven thousand, four hundred forty-nine".