287004749 has 2 divisors, whose sum is σ = 287004750. Its totient is φ = 287004748.

The previous prime is 287004743. The next prime is 287004763. The reversal of 287004749 is 947400782.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 267486025 + 19518724 = 16355^2 + 4418^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-287004749 is a prime.

It is equal to p_15585647 and since 287004749 and 15585647 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (287004743) 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, 143502374 + 143502375.

It is an arithmetic number, because the mean of its divisors is an integer number (143502375).

Almost surely, 2^287004749 is an apocalyptic number.

It is an amenable number.

287004749 is a deficient number, since it is larger than the sum of its proper divisors (1).

287004749 is an equidigital number, since it uses as much as digits as its factorization.

287004749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 287004749 is about 16941.2145078209. The cubic root of 287004749 is about 659.6238666438.

The spelling of 287004749 in words is "two hundred eighty-seven million, four thousand, seven hundred forty-nine".