1144392899 has 8 divisors (see below), whose sum is σ = 1286007072. Its totient is φ = 1010433600.

The previous prime is 1144392889. The next prime is 1144392901. The reversal of 1144392899 is 9982934411.

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 1144392899 - 2¹² = 1144388803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1144392829) 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, 1913402 + ... + 1913999.

It is an arithmetic number, because the mean of its divisors is an integer number (160750884).

Almost surely, 2^1144392899 is an apocalyptic number.

1144392899 is a deficient number, since it is larger than the sum of its proper divisors (141614173).

1144392899 is a wasteful number, since it uses less digits than its factorization.

1144392899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3827437.

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

The square root of 1144392899 is about 33828.8767031955. The cubic root of 1144392899 is about 1045.9840243018.

The spelling of 1144392899 in words is "one billion, one hundred forty-four million, three hundred ninety-two thousand, eight hundred ninety-nine".