347994379 has 2 divisors, whose sum is σ = 347994380. Its totient is φ = 347994378.

The previous prime is 347994371. The next prime is 347994397. The reversal of 347994379 is 973499743.

It is a happy number.

Together with next prime (347994397) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is an emirp because it is prime and its reverse (973499743) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 347994379 - 2³ = 347994371 is a prime.

It is a super-2 number, since 2×347994379² = 242200175631191282, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (347994371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173997189 + 173997190.

It is an arithmetic number, because the mean of its divisors is an integer number (173997190).

Almost surely, 2^347994379 is an apocalyptic number.

347994379 is a deficient number, since it is larger than the sum of its proper divisors (1).

347994379 is an equidigital number, since it uses as much as digits as its factorization.

347994379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5143824, while the sum is 55.

The square root of 347994379 is about 18654.6074469553. The cubic root of 347994379 is about 703.3811784847.

The spelling of 347994379 in words is "three hundred forty-seven million, nine hundred ninety-four thousand, three hundred seventy-nine".