346405429 has 2 divisors, whose sum is σ = 346405430. Its totient is φ = 346405428.

The previous prime is 346405421. The next prime is 346405483. The reversal of 346405429 is 924504643.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 237098404 + 109307025 = 15398^2 + 10455^2 .

It is an emirp because it is prime and its reverse (924504643) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 346405429 - 2³ = 346405421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (346405421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173202714 + 173202715.

It is an arithmetic number, because the mean of its divisors is an integer number (173202715).

Almost surely, 2^346405429 is an apocalyptic number.

It is an amenable number.

346405429 is a deficient number, since it is larger than the sum of its proper divisors (1).

346405429 is an equidigital number, since it uses as much as digits as its factorization.

346405429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 37.

The square root of 346405429 is about 18611.9700461826. The cubic root of 346405429 is about 702.3089936336.

The spelling of 346405429 in words is "three hundred forty-six million, four hundred five thousand, four hundred twenty-nine".