1244005099 has 4 divisors (see below), whose sum is σ = 1244880736. Its totient is φ = 1243129464.

The previous prime is 1244005051. The next prime is 1244005109. The reversal of 1244005099 is 9905004421.

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

It is a cyclic number.

It is not a de Polignac number, because 1244005099 - 2¹³ = 1243996907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1244005699) 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 3 ways as a sum of consecutive naturals, for example, 435684 + ... + 438529.

It is an arithmetic number, because the mean of its divisors is an integer number (311220184).

Almost surely, 2^1244005099 is an apocalyptic number.

1244005099 is a deficient number, since it is larger than the sum of its proper divisors (875637).

1244005099 is an equidigital number, since it uses as much as digits as its factorization.

1244005099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 875636.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 1244005099 is about 35270.4564614636. The cubic root of 1244005099 is about 1075.4925016424.

The spelling of 1244005099 in words is "one billion, two hundred forty-four million, five thousand, ninety-nine".