145986229 has 2 divisors, whose sum is σ = 145986230. Its totient is φ = 145986228.

The previous prime is 145986227. The next prime is 145986251. The reversal of 145986229 is 922689541.

145986229 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73702225 + 72284004 = 8585^2 + 8502^2 .

It is a cyclic number.

It is not a de Polignac number, because 145986229 - 2¹ = 145986227 is a prime.

It is a super-3 number, since 3×145986229³ (a number of 25 digits) contains 333 as substring.

Together with 145986227, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145986227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72993114 + 72993115.

It is an arithmetic number, because the mean of its divisors is an integer number (72993115).

Almost surely, 2^145986229 is an apocalyptic number.

It is an amenable number.

145986229 is a deficient number, since it is larger than the sum of its proper divisors (1).

145986229 is an equidigital number, since it uses as much as digits as its factorization.

145986229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 311040, while the sum is 46.

The square root of 145986229 is about 12082.4761121221. The cubic root of 145986229 is about 526.5471867959.

The spelling of 145986229 in words is "one hundred forty-five million, nine hundred eighty-six thousand, two hundred twenty-nine".