347389949 has 2 divisors, whose sum is σ = 347389950. Its totient is φ = 347389948.

The previous prime is 347389897. The next prime is 347389979. The reversal of 347389949 is 949983743.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 254402500 + 92987449 = 15950^2 + 9643^2 .

It is a cyclic number.

It is not a de Polignac number, because 347389949 - 2¹² = 347385853 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 347389894 and 347389903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (347389979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173694974 + 173694975.

It is an arithmetic number, because the mean of its divisors is an integer number (173694975).

Almost surely, 2^347389949 is an apocalyptic number.

It is an amenable number.

347389949 is a deficient number, since it is larger than the sum of its proper divisors (1).

347389949 is an equidigital number, since it uses as much as digits as its factorization.

347389949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5878656, while the sum is 56.

The square root of 347389949 is about 18638.3998508456. The cubic root of 347389949 is about 702.9737091947.

The spelling of 347389949 in words is "three hundred forty-seven million, three hundred eighty-nine thousand, nine hundred forty-nine".