344639253989 has 2 divisors, whose sum is σ = 344639253990. Its totient is φ = 344639253988.

The previous prime is 344639253977. The next prime is 344639254123. The reversal of 344639253989 is 989352936443.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 282928248100 + 61711005889 = 531910^2 + 248417^2 .

It is a cyclic number.

It is not a de Polignac number, because 344639253989 - 2¹² = 344639249893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (344639253289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172319626994 + 172319626995.

It is an arithmetic number, because the mean of its divisors is an integer number (172319626995).

Almost surely, 2^344639253989 is an apocalyptic number.

It is an amenable number.

344639253989 is a deficient number, since it is larger than the sum of its proper divisors (1).

344639253989 is an equidigital number, since it uses as much as digits as its factorization.

344639253989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 151165440, while the sum is 65.

The spelling of 344639253989 in words is "three hundred forty-four billion, six hundred thirty-nine million, two hundred fifty-three thousand, nine hundred eighty-nine".