1144400129 has 2 divisors, whose sum is σ = 1144400130. Its totient is φ = 1144400128.

The previous prime is 1144400111. The next prime is 1144400137. The reversal of 1144400129 is 9210044411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 603930625 + 540469504 = 24575^2 + 23248^2 .

It is an emirp because it is prime and its reverse (9210044411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1144400129 - 2⁸ = 1144399873 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1144400098 and 1144400107.

It is not a weakly prime, because it can be changed into another prime (1144400329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572200064 + 572200065.

It is an arithmetic number, because the mean of its divisors is an integer number (572200065).

Almost surely, 2^1144400129 is an apocalyptic number.

It is an amenable number.

1144400129 is a deficient number, since it is larger than the sum of its proper divisors (1).

1144400129 is an equidigital number, since it uses as much as digits as its factorization.

1144400129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 1144400129 is about 33828.9835643934. The cubic root of 1144400129 is about 1045.9862270560.

The spelling of 1144400129 in words is "one billion, one hundred forty-four million, four hundred thousand, one hundred twenty-nine".