146090309 has 2 divisors, whose sum is σ = 146090310. Its totient is φ = 146090308.

The previous prime is 146090293. The next prime is 146090317. The reversal of 146090309 is 903090641.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95609284 + 50481025 = 9778^2 + 7105^2 .

It is a cyclic number.

It is not a de Polignac number, because 146090309 - 2⁴ = 146090293 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (146090389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73045154 + 73045155.

It is an arithmetic number, because the mean of its divisors is an integer number (73045155).

Almost surely, 2^146090309 is an apocalyptic number.

It is an amenable number.

146090309 is a deficient number, since it is larger than the sum of its proper divisors (1).

146090309 is an equidigital number, since it uses as much as digits as its factorization.

146090309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 146090309 is about 12086.7824088961. The cubic root of 146090309 is about 526.6722899487.

The spelling of 146090309 in words is "one hundred forty-six million, ninety thousand, three hundred nine".