286400249 has 2 divisors, whose sum is σ = 286400250. Its totient is φ = 286400248.

The previous prime is 286400237. The next prime is 286400251. The reversal of 286400249 is 942004682.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 286117225 + 283024 = 16915^2 + 532^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-286400249 is a prime.

Together with 286400251, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (286400269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 143200124 + 143200125.

It is an arithmetic number, because the mean of its divisors is an integer number (143200125).

Almost surely, 2^286400249 is an apocalyptic number.

It is an amenable number.

286400249 is a deficient number, since it is larger than the sum of its proper divisors (1).

286400249 is an equidigital number, since it uses as much as digits as its factorization.

286400249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 286400249 is about 16923.3639977399. The cubic root of 286400249 is about 659.1604330762.

The spelling of 286400249 in words is "two hundred eighty-six million, four hundred thousand, two hundred forty-nine".