1229086499 has 4 divisors (see below), whose sum is σ = 1249235520. Its totient is φ = 1208937480.

The previous prime is 1229086487. The next prime is 1229086531. The reversal of 1229086499 is 9946809221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1229086499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1229086429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10074419 + ... + 10074540.

It is an arithmetic number, because the mean of its divisors is an integer number (312308880).

Almost surely, 2^1229086499 is an apocalyptic number.

1229086499 is a deficient number, since it is larger than the sum of its proper divisors (20149021).

1229086499 is an equidigital number, since it uses as much as digits as its factorization.

1229086499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20149020.

The product of its (nonzero) digits is 559872, while the sum is 50.

The square root of 1229086499 is about 35058.3299516677. The cubic root of 1229086499 is about 1071.1759566623.

It can be divided in two parts, 12290 and 86499, that added together give a palindrome (98789).

The spelling of 1229086499 in words is "one billion, two hundred twenty-nine million, eighty-six thousand, four hundred ninety-nine".