1229559987 has 8 divisors (see below), whose sum is σ = 1683721936. Its totient is φ = 797552352.

The previous prime is 1229559983. The next prime is 1229560027. The reversal of 1229559987 is 7899559221.

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

It is not a de Polignac number, because 1229559987 - 2² = 1229559983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1229559983) 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, 5538448 + ... + 5538669.

It is an arithmetic number, because the mean of its divisors is an integer number (210465242).

Almost surely, 2^1229559987 is an apocalyptic number.

1229559987 is a deficient number, since it is larger than the sum of its proper divisors (454161949).

1229559987 is a wasteful number, since it uses less digits than its factorization.

1229559987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11077157.

The product of its digits is 4082400, while the sum is 57.

The square root of 1229559987 is about 35065.0821616034. The cubic root of 1229559987 is about 1071.3134907433.

The spelling of 1229559987 in words is "one billion, two hundred twenty-nine million, five hundred fifty-nine thousand, nine hundred eighty-seven".