863475449 has 2 divisors, whose sum is σ = 863475450. Its totient is φ = 863475448.

The previous prime is 863475433. The next prime is 863475461. The reversal of 863475449 is 944574368.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 856147600 + 7327849 = 29260^2 + 2707^2 .

It is a cyclic number.

It is not a de Polignac number, because 863475449 - 2⁴ = 863475433 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 863475397 and 863475406.

It is not a weakly prime, because it can be changed into another prime (863475409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 431737724 + 431737725.

It is an arithmetic number, because the mean of its divisors is an integer number (431737725).

Almost surely, 2^863475449 is an apocalyptic number.

It is an amenable number.

863475449 is a deficient number, since it is larger than the sum of its proper divisors (1).

863475449 is an equidigital number, since it uses as much as digits as its factorization.

863475449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2903040, while the sum is 50.

The square root of 863475449 is about 29384.9527649782. The cubic root of 863475449 is about 952.2478438252.

The spelling of 863475449 in words is "eight hundred sixty-three million, four hundred seventy-five thousand, four hundred forty-nine".