1399209113 has 2 divisors, whose sum is σ = 1399209114. Its totient is φ = 1399209112.

The previous prime is 1399209101. The next prime is 1399209143. The reversal of 1399209113 is 3119029931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 778800649 + 620408464 = 27907^2 + 24908^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1399209113 is a prime.

It is a super-2 number, since 2×1399209113² = 3915572283804493538, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1399209143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 699604556 + 699604557.

It is an arithmetic number, because the mean of its divisors is an integer number (699604557).

Almost surely, 2^1399209113 is an apocalyptic number.

It is an amenable number.

1399209113 is a deficient number, since it is larger than the sum of its proper divisors (1).

1399209113 is an equidigital number, since it uses as much as digits as its factorization.

1399209113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13122, while the sum is 38.

The square root of 1399209113 is about 37406.0037026144. The cubic root of 1399209113 is about 1118.4782460816.

The spelling of 1399209113 in words is "one billion, three hundred ninety-nine million, two hundred nine thousand, one hundred thirteen".