1200868969 has 2 divisors, whose sum is σ = 1200868970. Its totient is φ = 1200868968.

The previous prime is 1200868961. The next prime is 1200868973. The reversal of 1200868969 is 9698680021.

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., 846111744 + 354757225 = 29088^2 + 18835^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200868969 - 2³ = 1200868961 is a prime.

It is a super-2 number, since 2×1200868969² = 2884172561414245922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1200868961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600434484 + 600434485.

It is an arithmetic number, because the mean of its divisors is an integer number (600434485).

Almost surely, 2^1200868969 is an apocalyptic number.

It is an amenable number.

1200868969 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200868969 is an equidigital number, since it uses as much as digits as its factorization.

1200868969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 49.

The square root of 1200868969 is about 34653.5563687192. The cubic root of 1200868969 is about 1062.9150121129.

The spelling of 1200868969 in words is "one billion, two hundred million, eight hundred sixty-eight thousand, nine hundred sixty-nine".