285675449 has 2 divisors, whose sum is σ = 285675450. Its totient is φ = 285675448.

The previous prime is 285675443. The next prime is 285675461. The reversal of 285675449 is 944576582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 153264400 + 132411049 = 12380^2 + 11507^2 .

It is a cyclic number.

It is not a de Polignac number, because 285675449 - 2⁸ = 285675193 is a prime.

It is a super-2 number, since 2×285675449² = 163220924322703202, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 285675397 and 285675406.

It is not a weakly prime, because it can be changed into another prime (285675443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142837724 + 142837725.

It is an arithmetic number, because the mean of its divisors is an integer number (142837725).

Almost surely, 2^285675449 is an apocalyptic number.

It is an amenable number.

285675449 is a deficient number, since it is larger than the sum of its proper divisors (1).

285675449 is an equidigital number, since it uses as much as digits as its factorization.

285675449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2419200, while the sum is 50.

The square root of 285675449 is about 16901.9362500277. The cubic root of 285675449 is about 658.6039122899.

The spelling of 285675449 in words is "two hundred eighty-five million, six hundred seventy-five thousand, four hundred forty-nine".