1149747199 has 4 divisors (see below), whose sum is σ = 1150043760. Its totient is φ = 1149450640.

The previous prime is 1149747173. The next prime is 1149747227. The reversal of 1149747199 is 9917479411.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1149747199 - 2²⁵ = 1116192767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1149747149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142387 + ... + 150244.

It is an arithmetic number, because the mean of its divisors is an integer number (287510940).

Almost surely, 2^1149747199 is an apocalyptic number.

1149747199 is a deficient number, since it is larger than the sum of its proper divisors (296561).

1149747199 is an equidigital number, since it uses as much as digits as its factorization.

1149747199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296560.

The product of its digits is 571536, while the sum is 52.

The square root of 1149747199 is about 33907.9223633652. The cubic root of 1149747199 is about 1047.6127774103.

The spelling of 1149747199 in words is "one billion, one hundred forty-nine million, seven hundred forty-seven thousand, one hundred ninety-nine".