223400389 has 2 divisors, whose sum is σ = 223400390. Its totient is φ = 223400388.

The previous prime is 223400377. The next prime is 223400407. The reversal of 223400389 is 983004322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 218064289 + 5336100 = 14767^2 + 2310^2 .

It is a cyclic number.

It is not a de Polignac number, because 223400389 - 2⁹ = 223399877 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 223400389.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223400329) 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, 111700194 + 111700195.

It is an arithmetic number, because the mean of its divisors is an integer number (111700195).

Almost surely, 2^223400389 is an apocalyptic number.

It is an amenable number.

223400389 is a deficient number, since it is larger than the sum of its proper divisors (1).

223400389 is an equidigital number, since it uses as much as digits as its factorization.

223400389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 223400389 is about 14946.5845262388. The cubic root of 223400389 is about 606.7754136591.

The spelling of 223400389 in words is "two hundred twenty-three million, four hundred thousand, three hundred eighty-nine".