1144120399 has 2 divisors, whose sum is σ = 1144120400. Its totient is φ = 1144120398.

The previous prime is 1144120391. The next prime is 1144120421. The reversal of 1144120399 is 9930214411.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1144120399 - 2³ = 1144120391 is a prime.

It is a super-2 number, since 2×1144120399² = 2618022974815838402, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1144120391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572060199 + 572060200.

It is an arithmetic number, because the mean of its divisors is an integer number (572060200).

Almost surely, 2^1144120399 is an apocalyptic number.

1144120399 is a deficient number, since it is larger than the sum of its proper divisors (1).

1144120399 is an equidigital number, since it uses as much as digits as its factorization.

1144120399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 1144120399 is about 33824.8488392779. The cubic root of 1144120399 is about 1045.9009953370.

The spelling of 1144120399 in words is "one billion, one hundred forty-four million, one hundred twenty thousand, three hundred ninety-nine".