146222347 has 4 divisors (see below), whose sum is σ = 153918280. Its totient is φ = 138526416.

The previous prime is 146222281. The next prime is 146222357. The reversal of 146222347 is 743222641.

It is a happy number.

146222347 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 146222347 - 2¹¹ = 146220299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (146222357) 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, 3847938 + ... + 3847975.

It is an arithmetic number, because the mean of its divisors is an integer number (38479570).

Almost surely, 2^146222347 is an apocalyptic number.

146222347 is a deficient number, since it is larger than the sum of its proper divisors (7695933).

146222347 is an equidigital number, since it uses as much as digits as its factorization.

146222347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7695932.

The product of its digits is 16128, while the sum is 31.

The square root of 146222347 is about 12092.2432575598. The cubic root of 146222347 is about 526.8309128723.

Adding to 146222347 its reverse (743222641), we get a palindrome (889444988).

The spelling of 146222347 in words is "one hundred forty-six million, two hundred twenty-two thousand, three hundred forty-seven".