287493841 has 2 divisors, whose sum is σ = 287493842. Its totient is φ = 287493840.

The previous prime is 287493827. The next prime is 287493863. The reversal of 287493841 is 148394782.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 152004241 + 135489600 = 12329^2 + 11640^2 .

It is a cyclic number.

It is not a de Polignac number, because 287493841 - 2²⁵ = 253939409 is a prime.

It is a super-2 number, since 2×287493841² = 165305417225866562, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 287493791 and 287493800.

It is not a weakly prime, because it can be changed into another prime (287493881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 143746920 + 143746921.

It is an arithmetic number, because the mean of its divisors is an integer number (143746921).

Almost surely, 2^287493841 is an apocalyptic number.

It is an amenable number.

287493841 is a deficient number, since it is larger than the sum of its proper divisors (1).

287493841 is an equidigital number, since it uses as much as digits as its factorization.

287493841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 387072, while the sum is 46.

The square root of 287493841 is about 16955.6433378389. The cubic root of 287493841 is about 659.9983478685.

The spelling of 287493841 in words is "two hundred eighty-seven million, four hundred ninety-three thousand, eight hundred forty-one".