369969869 has 2 divisors, whose sum is σ = 369969870. Its totient is φ = 369969868.

The previous prime is 369969863. The next prime is 369969917. The reversal of 369969869 is 968969963.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 362407369 + 7562500 = 19037^2 + 2750^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-369969869 is a prime.

It is a super-2 number, since 2×369969869² = 273755407935754322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (369969863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 184984934 + 184984935.

It is an arithmetic number, because the mean of its divisors is an integer number (184984935).

Almost surely, 2^369969869 is an apocalyptic number.

It is an amenable number.

369969869 is a deficient number, since it is larger than the sum of its proper divisors (1).

369969869 is an equidigital number, since it uses as much as digits as its factorization.

369969869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34012224, while the sum is 65.

The square root of 369969869 is about 19234.6008276751. The cubic root of 369969869 is about 717.8859471024.

The spelling of 369969869 in words is "three hundred sixty-nine million, nine hundred sixty-nine thousand, eight hundred sixty-nine".