1298863 has 2 divisors, whose sum is σ = 1298864. Its totient is φ = 1298862.

The previous prime is 1298849. The next prime is 1298887. The reversal of 1298863 is 3688921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1298863 - 2⁵ = 1298831 is a prime.

1298863 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1298963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 649431 + 649432.

It is an arithmetic number, because the mean of its divisors is an integer number (649432).

2^1298863 is an apocalyptic number.

1298863 is a deficient number, since it is larger than the sum of its proper divisors (1).

1298863 is an equidigital number, since it uses as much as digits as its factorization.

1298863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 37.

The square root of 1298863 is about 1139.6767085450. The cubic root of 1298863 is about 109.1074607251.

The spelling of 1298863 in words is "one million, two hundred ninety-eight thousand, eight hundred sixty-three".