286272397 has 2 divisors, whose sum is σ = 286272398. Its totient is φ = 286272396.

The previous prime is 286272377. The next prime is 286272407. The reversal of 286272397 is 793272682.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 227074761 + 59197636 = 15069^2 + 7694^2 .

It is a cyclic number.

It is not a de Polignac number, because 286272397 - 2²³ = 277883789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (286272377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 143136198 + 143136199.

It is an arithmetic number, because the mean of its divisors is an integer number (143136199).

Almost surely, 2^286272397 is an apocalyptic number.

It is an amenable number.

286272397 is a deficient number, since it is larger than the sum of its proper divisors (1).

286272397 is an equidigital number, since it uses as much as digits as its factorization.

286272397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 508032, while the sum is 46.

The square root of 286272397 is about 16919.5861947035. The cubic root of 286272397 is about 659.0623331578.

The spelling of 286272397 in words is "two hundred eighty-six million, two hundred seventy-two thousand, three hundred ninety-seven".