344845397947 has 4 divisors (see below), whose sum is σ = 344849463136. Its totient is φ = 344841332760.

The previous prime is 344845397929. The next prime is 344845397993. The reversal of 344845397947 is 749793548443.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 749793548443 = 41 ⋅18287647523.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-344845397947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (344845367947) 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, 1902579 + ... + 2075932.

It is an arithmetic number, because the mean of its divisors is an integer number (86212365784).

Almost surely, 2^344845397947 is an apocalyptic number.

344845397947 is a deficient number, since it is larger than the sum of its proper divisors (4065189).

344845397947 is an equidigital number, since it uses as much as digits as its factorization.

344845397947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4065188.

The product of its digits is 365783040, while the sum is 67.

The spelling of 344845397947 in words is "three hundred forty-four billion, eight hundred forty-five million, three hundred ninety-seven thousand, nine hundred forty-seven".