347225987 has 2 divisors, whose sum is σ = 347225988. Its totient is φ = 347225986.

The previous prime is 347225939. The next prime is 347226017. The reversal of 347225987 is 789522743.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (789522743) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 347225987 - 2¹⁰ = 347224963 is a prime.

It is not a weakly prime, because it can be changed into another prime (347225927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173612993 + 173612994.

It is an arithmetic number, because the mean of its divisors is an integer number (173612994).

Almost surely, 2^347225987 is an apocalyptic number.

347225987 is a deficient number, since it is larger than the sum of its proper divisors (1).

347225987 is an equidigital number, since it uses as much as digits as its factorization.

347225987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 846720, while the sum is 47.

The square root of 347225987 is about 18634.0008318128. Note that the first 3 decimals coincide. The cubic root of 347225987 is about 702.8630946782.

The spelling of 347225987 in words is "three hundred forty-seven million, two hundred twenty-five thousand, nine hundred eighty-seven".