1199049949 has 2 divisors, whose sum is σ = 1199049950. Its totient is φ = 1199049948.

The previous prime is 1199049941. The next prime is 1199049989. The reversal of 1199049949 is 9499409911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 779414724 + 419635225 = 27918^2 + 20485^2 .

It is a cyclic number.

It is not a de Polignac number, because 1199049949 - 2³ = 1199049941 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1199049949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1199049941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 599524974 + 599524975.

It is an arithmetic number, because the mean of its divisors is an integer number (599524975).

Almost surely, 2^1199049949 is an apocalyptic number.

It is an amenable number.

1199049949 is a deficient number, since it is larger than the sum of its proper divisors (1).

1199049949 is an equidigital number, since it uses as much as digits as its factorization.

1199049949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 944784, while the sum is 55.

The square root of 1199049949 is about 34627.3006311494. The cubic root of 1199049949 is about 1062.3780562980.

The spelling of 1199049949 in words is "one billion, one hundred ninety-nine million, forty-nine thousand, nine hundred forty-nine".