287290349 has 2 divisors, whose sum is σ = 287290350. Its totient is φ = 287290348.

The previous prime is 287290337. The next prime is 287290351. The reversal of 287290349 is 943092782.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 255424324 + 31866025 = 15982^2 + 5645^2 .

It is a cyclic number.

It is not a de Polignac number, because 287290349 - 2¹⁶ = 287224813 is a prime.

Together with 287290351, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (287290379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 143645174 + 143645175.

It is an arithmetic number, because the mean of its divisors is an integer number (143645175).

Almost surely, 2^287290349 is an apocalyptic number.

It is an amenable number.

287290349 is a deficient number, since it is larger than the sum of its proper divisors (1).

287290349 is an equidigital number, since it uses as much as digits as its factorization.

287290349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 287290349 is about 16949.6415596319. The cubic root of 287290349 is about 659.8425925507.

The spelling of 287290349 in words is "two hundred eighty-seven million, two hundred ninety thousand, three hundred forty-nine".