1228089287 has 2 divisors, whose sum is σ = 1228089288. Its totient is φ = 1228089286.

The previous prime is 1228089259. The next prime is 1228089319. The reversal of 1228089287 is 7829808221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1228089287 - 2⁶ = 1228089223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1228089587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 614044643 + 614044644.

It is an arithmetic number, because the mean of its divisors is an integer number (614044644).

Almost surely, 2^1228089287 is an apocalyptic number.

1228089287 is a deficient number, since it is larger than the sum of its proper divisors (1).

1228089287 is an equidigital number, since it uses as much as digits as its factorization.

1228089287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 258048, while the sum is 47.

The square root of 1228089287 is about 35044.1048822766. The cubic root of 1228089287 is about 1070.8861808711.

The spelling of 1228089287 in words is "one billion, two hundred twenty-eight million, eighty-nine thousand, two hundred eighty-seven".