612200389 has 2 divisors, whose sum is σ = 612200390. Its totient is φ = 612200388.

The previous prime is 612200383. The next prime is 612200401. The reversal of 612200389 is 983002216.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 520615489 + 91584900 = 22817^2 + 9570^2 .

It is a cyclic number.

It is not a de Polignac number, because 612200389 - 2⁹ = 612199877 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 612200389.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (612200383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306100194 + 306100195.

It is an arithmetic number, because the mean of its divisors is an integer number (306100195).

Almost surely, 2^612200389 is an apocalyptic number.

It is an amenable number.

612200389 is a deficient number, since it is larger than the sum of its proper divisors (1).

612200389 is an equidigital number, since it uses as much as digits as its factorization.

612200389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 612200389 is about 24742.6835448381. The cubic root of 612200389 is about 849.1111303228. Note that the first 4 decimals are identical.

The spelling of 612200389 in words is "six hundred twelve million, two hundred thousand, three hundred eighty-nine".