146659489 has 2 divisors, whose sum is σ = 146659490. Its totient is φ = 146659488.

The previous prime is 146659483. The next prime is 146659507. The reversal of 146659489 is 984956641.

It is a happy number.

146659489 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., 134374464 + 12285025 = 11592^2 + 3505^2 .

It is a cyclic number.

It is not a de Polignac number, because 146659489 - 2⁷ = 146659361 is a prime.

It is a super-2 number, since 2×146659489² = 43018011427482242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (146659483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73329744 + 73329745.

It is an arithmetic number, because the mean of its divisors is an integer number (73329745).

Almost surely, 2^146659489 is an apocalyptic number.

It is an amenable number.

146659489 is a deficient number, since it is larger than the sum of its proper divisors (1).

146659489 is an equidigital number, since it uses as much as digits as its factorization.

146659489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1866240, while the sum is 52.

The square root of 146659489 is about 12110.3050746049. The cubic root of 146659489 is about 527.3553899324.

The spelling of 146659489 in words is "one hundred forty-six million, six hundred fifty-nine thousand, four hundred eighty-nine".