287494069 has 2 divisors, whose sum is σ = 287494070. Its totient is φ = 287494068.

The previous prime is 287494049. The next prime is 287494099. The reversal of 287494069 is 960494782.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 237622225 + 49871844 = 15415^2 + 7062^2 .

It is a cyclic number.

It is not a de Polignac number, because 287494069 - 2¹⁵ = 287461301 is a prime.

It is a super-2 number, since 2×287494069² = 165305679420353522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (287494049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 143747034 + 143747035.

It is an arithmetic number, because the mean of its divisors is an integer number (143747035).

Almost surely, 2^287494069 is an apocalyptic number.

It is an amenable number.

287494069 is a deficient number, since it is larger than the sum of its proper divisors (1).

287494069 is an equidigital number, since it uses as much as digits as its factorization.

287494069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 870912, while the sum is 49.

The square root of 287494069 is about 16955.6500612628. The cubic root of 287494069 is about 659.9985223414.

The spelling of 287494069 in words is "two hundred eighty-seven million, four hundred ninety-four thousand, sixty-nine".