146690009 has 2 divisors, whose sum is σ = 146690010. Its totient is φ = 146690008.

The previous prime is 146689997. The next prime is 146690023. The reversal of 146690009 is 900096641.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109662784 + 37027225 = 10472^2 + 6085^2 .

It is a cyclic number.

It is not a de Polignac number, because 146690009 - 2⁴ = 146689993 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (146690039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73345004 + 73345005.

It is an arithmetic number, because the mean of its divisors is an integer number (73345005).

Almost surely, 2^146690009 is an apocalyptic number.

It is an amenable number.

146690009 is a deficient number, since it is larger than the sum of its proper divisors (1).

146690009 is an equidigital number, since it uses as much as digits as its factorization.

146690009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 146690009 is about 12111.5650929184. The cubic root of 146690009 is about 527.3919684729.

The spelling of 146690009 in words is "one hundred forty-six million, six hundred ninety thousand, nine".