1399838659 has 2 divisors, whose sum is σ = 1399838660. Its totient is φ = 1399838658.

The previous prime is 1399838639. The next prime is 1399838677. The reversal of 1399838659 is 9568389931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1399838659 - 2¹¹ = 1399836611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1399838597 and 1399838606.

It is not a weakly prime, because it can be changed into another prime (1399838639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 699919329 + 699919330.

It is an arithmetic number, because the mean of its divisors is an integer number (699919330).

Almost surely, 2^1399838659 is an apocalyptic number.

1399838659 is a deficient number, since it is larger than the sum of its proper divisors (1).

1399838659 is an equidigital number, since it uses as much as digits as its factorization.

1399838659 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12597120, while the sum is 61.

The square root of 1399838659 is about 37414.4177958177. The cubic root of 1399838659 is about 1118.6459665275.

The spelling of 1399838659 in words is "one billion, three hundred ninety-nine million, eight hundred thirty-eight thousand, six hundred fifty-nine".