611389423 has 2 divisors, whose sum is σ = 611389424. Its totient is φ = 611389422.

The previous prime is 611389421. The next prime is 611389459. The reversal of 611389423 is 324983116.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 611389423 - 2¹ = 611389421 is a prime.

Together with 611389421, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (611389421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305694711 + 305694712.

It is an arithmetic number, because the mean of its divisors is an integer number (305694712).

Almost surely, 2^611389423 is an apocalyptic number.

611389423 is a deficient number, since it is larger than the sum of its proper divisors (1).

611389423 is an equidigital number, since it uses as much as digits as its factorization.

611389423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 37.

The square root of 611389423 is about 24726.2901180100. The cubic root of 611389423 is about 848.7360328055.

The spelling of 611389423 in words is "six hundred eleven million, three hundred eighty-nine thousand, four hundred twenty-three".