348912689 has 2 divisors, whose sum is σ = 348912690. Its totient is φ = 348912688.

The previous prime is 348912677. The next prime is 348912703. The reversal of 348912689 is 986219843.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 292136464 + 56776225 = 17092^2 + 7535^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-348912689 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (348012689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174456344 + 174456345.

It is an arithmetic number, because the mean of its divisors is an integer number (174456345).

Almost surely, 2^348912689 is an apocalyptic number.

It is an amenable number.

348912689 is a deficient number, since it is larger than the sum of its proper divisors (1).

348912689 is an equidigital number, since it uses as much as digits as its factorization.

348912689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 746496, while the sum is 50.

The square root of 348912689 is about 18679.2047207583. The cubic root of 348912689 is about 703.9993442498. Note that the first 3 decimals are identical.

The spelling of 348912689 in words is "three hundred forty-eight million, nine hundred twelve thousand, six hundred eighty-nine".