146392489 has 2 divisors, whose sum is σ = 146392490. Its totient is φ = 146392488.

The previous prime is 146392481. The next prime is 146392507. The reversal of 146392489 is 984293641.

146392489 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., 87609600 + 58782889 = 9360^2 + 7667^2 .

It is an emirp because it is prime and its reverse (984293641) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 146392489 - 2³ = 146392481 is a prime.

It is a nialpdrome in base 15.

It is not a weakly prime, because it can be changed into another prime (146392481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73196244 + 73196245.

It is an arithmetic number, because the mean of its divisors is an integer number (73196245).

Almost surely, 2^146392489 is an apocalyptic number.

It is an amenable number.

146392489 is a deficient number, since it is larger than the sum of its proper divisors (1).

146392489 is an equidigital number, since it uses as much as digits as its factorization.

146392489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 373248, while the sum is 46.

The square root of 146392489 is about 12099.2763833214. The cubic root of 146392489 is about 527.0351710291.

The spelling of 146392489 in words is "one hundred forty-six million, three hundred ninety-two thousand, four hundred eighty-nine".