344309947 has 2 divisors, whose sum is σ = 344309948. Its totient is φ = 344309946.

The previous prime is 344309897. The next prime is 344309951. The reversal of 344309947 is 749903443.

It is a strong prime.

It is an emirp because it is prime and its reverse (749903443) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-344309947 is a prime.

It is not a weakly prime, because it can be changed into another prime (344319947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172154973 + 172154974.

It is an arithmetic number, because the mean of its divisors is an integer number (172154974).

Almost surely, 2^344309947 is an apocalyptic number.

344309947 is a deficient number, since it is larger than the sum of its proper divisors (1).

344309947 is an equidigital number, since it uses as much as digits as its factorization.

344309947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 43.

The square root of 344309947 is about 18555.5907208582. The cubic root of 344309947 is about 700.8899883867.

It can be divided in two parts, 344309 and 947, that multiplied together give a palindrome (326060623).

The spelling of 344309947 in words is "three hundred forty-four million, three hundred nine thousand, nine hundred forty-seven".