285882749 has 2 divisors, whose sum is σ = 285882750. Its totient is φ = 285882748.

The previous prime is 285882743. The next prime is 285882763. The reversal of 285882749 is 947288582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 285846649 + 36100 = 16907^2 + 190^2 .

It is a cyclic number.

It is not a de Polignac number, because 285882749 - 2⁴ = 285882733 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 285882749.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (285882743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142941374 + 142941375.

It is an arithmetic number, because the mean of its divisors is an integer number (142941375).

Almost surely, 2^285882749 is an apocalyptic number.

It is an amenable number.

285882749 is a deficient number, since it is larger than the sum of its proper divisors (1).

285882749 is an equidigital number, since it uses as much as digits as its factorization.

285882749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2580480, while the sum is 53.

The square root of 285882749 is about 16908.0675714287. The cubic root of 285882749 is about 658.7631787826.

The spelling of 285882749 in words is "two hundred eighty-five million, eight hundred eighty-two thousand, seven hundred forty-nine".