287401469 has 2 divisors, whose sum is σ = 287401470. Its totient is φ = 287401468.

The previous prime is 287401463. The next prime is 287401487. The reversal of 287401469 is 964104782.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 242175844 + 45225625 = 15562^2 + 6725^2 .

It is a cyclic number.

It is not a de Polignac number, because 287401469 - 2⁴ = 287401453 is a prime.

It is a super-2 number, since 2×287401469² = 165199208766715922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (287401463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 143700734 + 143700735.

It is an arithmetic number, because the mean of its divisors is an integer number (143700735).

Almost surely, 2^287401469 is an apocalyptic number.

It is an amenable number.

287401469 is a deficient number, since it is larger than the sum of its proper divisors (1).

287401469 is an equidigital number, since it uses as much as digits as its factorization.

287401469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 287401469 is about 16952.9191881516. The cubic root of 287401469 is about 659.9276542985.

The spelling of 287401469 in words is "two hundred eighty-seven million, four hundred one thousand, four hundred sixty-nine".