346220429 has 2 divisors, whose sum is σ = 346220430. Its totient is φ = 346220428.

The previous prime is 346220417. The next prime is 346220443. The reversal of 346220429 is 924022643.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 259693225 + 86527204 = 16115^2 + 9302^2 .

It is an emirp because it is prime and its reverse (924022643) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 346220429 - 2¹² = 346216333 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 346220395 and 346220404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (346220029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173110214 + 173110215.

It is an arithmetic number, because the mean of its divisors is an integer number (173110215).

Almost surely, 2^346220429 is an apocalyptic number.

It is an amenable number.

346220429 is a deficient number, since it is larger than the sum of its proper divisors (1).

346220429 is an equidigital number, since it uses as much as digits as its factorization.

346220429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 346220429 is about 18606.9994625678. Note that the first 3 decimals coincide. The cubic root of 346220429 is about 702.1839471906.

The spelling of 346220429 in words is "three hundred forty-six million, two hundred twenty thousand, four hundred twenty-nine".