1399184069 has 2 divisors, whose sum is σ = 1399184070. Its totient is φ = 1399184068.

The previous prime is 1399184057. The next prime is 1399184131. The reversal of 1399184069 is 9604819931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 748679044 + 650505025 = 27362^2 + 25505^2 .

It is a cyclic number.

It is not a de Polignac number, because 1399184069 - 2⁸ = 1399183813 is a prime.

It is a super-2 number, since 2×1399184069² = 3915432117886793522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1399184569) 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, 699592034 + 699592035.

It is an arithmetic number, because the mean of its divisors is an integer number (699592035).

Almost surely, 2^1399184069 is an apocalyptic number.

It is an amenable number.

1399184069 is a deficient number, since it is larger than the sum of its proper divisors (1).

1399184069 is an equidigital number, since it uses as much as digits as its factorization.

1399184069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 419904, while the sum is 50.

The square root of 1399184069 is about 37405.6689420200. The cubic root of 1399184069 is about 1118.4715729461.

The spelling of 1399184069 in words is "one billion, three hundred ninety-nine million, one hundred eighty-four thousand, sixty-nine".