234989917 has 2 divisors, whose sum is σ = 234989918. Its totient is φ = 234989916.

The previous prime is 234989893. The next prime is 234989999. The reversal of 234989917 is 719989432.

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., 231222436 + 3767481 = 15206^2 + 1941^2 .

It is a cyclic number.

It is not a de Polignac number, because 234989917 - 2¹¹ = 234987869 is a prime.

It is a super-2 number, since 2×234989917² = 110440522183333778, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (234989617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117494958 + 117494959.

It is an arithmetic number, because the mean of its divisors is an integer number (117494959).

Almost surely, 2^234989917 is an apocalyptic number.

It is an amenable number.

234989917 is a deficient number, since it is larger than the sum of its proper divisors (1).

234989917 is an equidigital number, since it uses as much as digits as its factorization.

234989917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 979776, while the sum is 52.

The square root of 234989917 is about 15329.3808420301. The cubic root of 234989917 is about 617.0917533002.

The spelling of 234989917 in words is "two hundred thirty-four million, nine hundred eighty-nine thousand, nine hundred seventeen".