1228963 has 2 divisors, whose sum is σ = 1228964. Its totient is φ = 1228962.

The previous prime is 1228961. The next prime is 1228987. The reversal of 1228963 is 3698221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1228963 - 2¹ = 1228961 is a prime.

Together with 1228961, it forms a pair of twin primes.

1228963 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (1228961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 614481 + 614482.

It is an arithmetic number, because the mean of its divisors is an integer number (614482).

2^1228963 is an apocalyptic number.

1228963 is a deficient number, since it is larger than the sum of its proper divisors (1).

1228963 is an equidigital number, since it uses as much as digits as its factorization.

1228963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 31.

The square root of 1228963 is about 1108.5860363544. The cubic root of 1228963 is about 107.1140078094.

The spelling of 1228963 in words is "one million, two hundred twenty-eight thousand, nine hundred sixty-three".