1228089887 has 8 divisors (see below), whose sum is σ = 1239481152. Its totient is φ = 1216749600.

The previous prime is 1228089859. The next prime is 1228089901. The reversal of 1228089887 is 7889808221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1228089887 - 2⁸ = 1228089631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228089827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36533 + ... + 61569.

It is an arithmetic number, because the mean of its divisors is an integer number (154935144).

Almost surely, 2^1228089887 is an apocalyptic number.

1228089887 is a deficient number, since it is larger than the sum of its proper divisors (11391265).

1228089887 is a wasteful number, since it uses less digits than its factorization.

1228089887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25489.

The product of its (nonzero) digits is 1032192, while the sum is 53.

The square root of 1228089887 is about 35044.1134429165. The cubic root of 1228089887 is about 1070.8863552698.

The spelling of 1228089887 in words is "one billion, two hundred twenty-eight million, eighty-nine thousand, eight hundred eighty-seven".