347973389 has 2 divisors, whose sum is σ = 347973390. Its totient is φ = 347973388.

The previous prime is 347973361. The next prime is 347973401. The reversal of 347973389 is 983379743.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 335512489 + 12460900 = 18317^2 + 3530^2 .

It is a cyclic number.

It is not a de Polignac number, because 347973389 - 2⁸ = 347973133 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 347973389.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (347975389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173986694 + 173986695.

It is an arithmetic number, because the mean of its divisors is an integer number (173986695).

Almost surely, 2^347973389 is an apocalyptic number.

It is an amenable number.

347973389 is a deficient number, since it is larger than the sum of its proper divisors (1).

347973389 is an equidigital number, since it uses as much as digits as its factorization.

347973389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3429216, while the sum is 53.

The square root of 347973389 is about 18654.0448428752. The cubic root of 347973389 is about 703.3670362373.

The spelling of 347973389 in words is "three hundred forty-seven million, nine hundred seventy-three thousand, three hundred eighty-nine".