1199795249 has 2 divisors, whose sum is σ = 1199795250. Its totient is φ = 1199795248.

The previous prime is 1199795237. The next prime is 1199795251. The reversal of 1199795249 is 9425979911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1147854400 + 51940849 = 33880^2 + 7207^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1199795249 is a prime.

Together with 1199795251, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1199795194 and 1199795203.

It is not a weakly prime, because it can be changed into another prime (1199795209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 599897624 + 599897625.

It is an arithmetic number, because the mean of its divisors is an integer number (599897625).

Almost surely, 2^1199795249 is an apocalyptic number.

It is an amenable number.

1199795249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1199795249 is an equidigital number, since it uses as much as digits as its factorization.

1199795249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1837080, while the sum is 56.

The square root of 1199795249 is about 34638.0606991789. The cubic root of 1199795249 is about 1062.5981267435.

The spelling of 1199795249 in words is "one billion, one hundred ninety-nine million, seven hundred ninety-five thousand, two hundred forty-nine".