146030909 has 4 divisors (see below), whose sum is σ = 146158716. Its totient is φ = 145903104.

The previous prime is 146030893. The next prime is 146030993. The reversal of 146030909 is 909030641.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 909030641 = 59 ⋅15407299.

It can be written as a sum of positive squares in 2 ways, for example, as 64850809 + 81180100 = 8053^2 + 9010^2 .

It is a cyclic number.

It is not a de Polignac number, because 146030909 - 2⁴ = 146030893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146030609) 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, 62174 + ... + 64479.

It is an arithmetic number, because the mean of its divisors is an integer number (36539679).

Almost surely, 2^146030909 is an apocalyptic number.

It is an amenable number.

146030909 is a deficient number, since it is larger than the sum of its proper divisors (127807).

146030909 is a wasteful number, since it uses less digits than its factorization.

146030909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127806.

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

The square root of 146030909 is about 12084.3249294282. The cubic root of 146030909 is about 526.6008990051.

The spelling of 146030909 in words is "one hundred forty-six million, thirty thousand, nine hundred nine".