1229686993 has 8 divisors (see below), whose sum is σ = 1305427968. Its totient is φ = 1154324544.

The previous prime is 1229686987. The next prime is 1229687003. The reversal of 1229686993 is 3996869221.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1229686993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1229686933) 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 in 7 ways as a sum of consecutive naturals, for example, 87921 + ... + 100942.

It is an arithmetic number, because the mean of its divisors is an integer number (163178496).

Almost surely, 2^1229686993 is an apocalyptic number.

It is an amenable number.

1229686993 is a deficient number, since it is larger than the sum of its proper divisors (75740975).

1229686993 is a wasteful number, since it uses less digits than its factorization.

1229686993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189263.

The product of its digits is 2519424, while the sum is 55.

The square root of 1229686993 is about 35066.8931187238. The cubic root of 1229686993 is about 1071.3503761760.

The spelling of 1229686993 in words is "one billion, two hundred twenty-nine million, six hundred eighty-six thousand, nine hundred ninety-three".