1149455999 has 2 divisors, whose sum is σ = 1149456000. Its totient is φ = 1149455998.

The previous prime is 1149455947. The next prime is 1149456019. The reversal of 1149455999 is 9995549411.

It is a strong prime.

It is an emirp because it is prime and its reverse (9995549411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1149455999 - 2⁸ = 1149455743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1149455399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 574727999 + 574728000.

It is an arithmetic number, because the mean of its divisors is an integer number (574728000).

Almost surely, 2^1149455999 is an apocalyptic number.

1149455999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1149455999 is an equidigital number, since it uses as much as digits as its factorization.

1149455999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2624400, while the sum is 56.

The square root of 1149455999 is about 33903.6281096876. The cubic root of 1149455999 is about 1047.5243259085.

The spelling of 1149455999 in words is "one billion, one hundred forty-nine million, four hundred fifty-five thousand, nine hundred ninety-nine".