1144455397 has 2 divisors, whose sum is σ = 1144455398. Its totient is φ = 1144455396.

The previous prime is 1144455331. The next prime is 1144455457. The reversal of 1144455397 is 7935544411.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 943779841 + 200675556 = 30721^2 + 14166^2 .

It is an emirp because it is prime and its reverse (7935544411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1144455397 - 2⁷ = 1144455269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1144455097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572227698 + 572227699.

It is an arithmetic number, because the mean of its divisors is an integer number (572227699).

Almost surely, 2^1144455397 is an apocalyptic number.

It is an amenable number.

1144455397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1144455397 is an equidigital number, since it uses as much as digits as its factorization.

1144455397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 302400, while the sum is 43.

The square root of 1144455397 is about 33829.8004280250. The cubic root of 1144455397 is about 1046.0030651748.

The spelling of 1144455397 in words is "one billion, one hundred forty-four million, four hundred fifty-five thousand, three hundred ninety-seven".