146109289 has 4 divisors (see below), whose sum is σ = 146199124. Its totient is φ = 146019456.

The previous prime is 146109277. The next prime is 146109307. The reversal of 146109289 is 982901641.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 982901641 = 127 ⋅7739383.

It can be written as a sum of positive squares in 2 ways, for example, as 68757264 + 77352025 = 8292^2 + 8795^2 .

It is a cyclic number.

It is not a de Polignac number, because 146109289 - 2¹³ = 146101097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (146109209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42432 + ... + 45745.

It is an arithmetic number, because the mean of its divisors is an integer number (36549781).

Almost surely, 2^146109289 is an apocalyptic number.

It is an amenable number.

146109289 is a deficient number, since it is larger than the sum of its proper divisors (89835).

146109289 is an equidigital number, since it uses as much as digits as its factorization.

146109289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89834.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 146109289 is about 12087.5675385910. The cubic root of 146109289 is about 526.6950973187.

The spelling of 146109289 in words is "one hundred forty-six million, one hundred nine thousand, two hundred eighty-nine".