346391401 has 2 divisors, whose sum is σ = 346391402. Its totient is φ = 346391400.

The previous prime is 346391389. The next prime is 346391417. The reversal of 346391401 is 104193643.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 223203600 + 123187801 = 14940^2 + 11099^2 .

It is a cyclic number.

It is not a de Polignac number, because 346391401 - 2¹³ = 346383209 is a prime.

It is not a weakly prime, because it can be changed into another prime (346191401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173195700 + 173195701.

It is an arithmetic number, because the mean of its divisors is an integer number (173195701).

Almost surely, 2^346391401 is an apocalyptic number.

It is an amenable number.

346391401 is a deficient number, since it is larger than the sum of its proper divisors (1).

346391401 is an equidigital number, since it uses as much as digits as its factorization.

346391401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 346391401 is about 18611.5931881180. The cubic root of 346391401 is about 702.2995132937.

It can be divided in two parts, 3463 and 91401, that added together give a square (94864 = 308²).

The spelling of 346391401 in words is "three hundred forty-six million, three hundred ninety-one thousand, four hundred one".