146071309 has 4 divisors (see below), whose sum is σ = 146967616. Its totient is φ = 145175004.

The previous prime is 146071307. The next prime is 146071313. The reversal of 146071309 is 903170641.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 903170641 = 103 ⋅8768647.

It is a cyclic number.

It is not a de Polignac number, because 146071309 - 2¹ = 146071307 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 (146071307) 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, 447909 + ... + 448234.

It is an arithmetic number, because the mean of its divisors is an integer number (36741904).

Almost surely, 2^146071309 is an apocalyptic number.

It is an amenable number.

146071309 is a deficient number, since it is larger than the sum of its proper divisors (896307).

146071309 is an equidigital number, since it uses as much as digits as its factorization.

146071309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896306.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 146071309 is about 12085.9964007938. The cubic root of 146071309 is about 526.6494565670.

The spelling of 146071309 in words is "one hundred forty-six million, seventy-one thousand, three hundred nine".