320444147 has 4 divisors (see below), whose sum is σ = 320831520. Its totient is φ = 320056776.

The previous prime is 320444141. The next prime is 320444249. The reversal of 320444147 is 741444023.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320444147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320444141) 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, 192443 + ... + 194100.

It is an arithmetic number, because the mean of its divisors is an integer number (80207880).

Almost surely, 2^320444147 is an apocalyptic number.

320444147 is a deficient number, since it is larger than the sum of its proper divisors (387373).

320444147 is an equidigital number, since it uses as much as digits as its factorization.

320444147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387372.

The product of its (nonzero) digits is 10752, while the sum is 29.

The square root of 320444147 is about 17900.9538014040. The cubic root of 320444147 is about 684.3066826629.

The spelling of 320444147 in words is "three hundred twenty million, four hundred forty-four thousand, one hundred forty-seven".