344278939 has 2 divisors, whose sum is σ = 344278940. Its totient is φ = 344278938.

The previous prime is 344278819. The next prime is 344279041. The reversal of 344278939 is 939872443.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 344278939 - 2⁷ = 344278811 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 344278892 and 344278901.

It is not a weakly prime, because it can be changed into another prime (344278139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172139469 + 172139470.

It is an arithmetic number, because the mean of its divisors is an integer number (172139470).

Almost surely, 2^344278939 is an apocalyptic number.

344278939 is a deficient number, since it is larger than the sum of its proper divisors (1).

344278939 is an equidigital number, since it uses as much as digits as its factorization.

344278939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1306368, while the sum is 49.

The square root of 344278939 is about 18554.7551587187. The cubic root of 344278939 is about 700.8689474134.

The spelling of 344278939 in words is "three hundred forty-four million, two hundred seventy-eight thousand, nine hundred thirty-nine".