223977389 has 2 divisors, whose sum is σ = 223977390. Its totient is φ = 223977388.

The previous prime is 223977373. The next prime is 223977407. The reversal of 223977389 is 983779322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 223263364 + 714025 = 14942^2 + 845^2 .

It is a cyclic number.

It is not a de Polignac number, because 223977389 - 2⁴ = 223977373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223977989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111988694 + 111988695.

It is an arithmetic number, because the mean of its divisors is an integer number (111988695).

Almost surely, 2^223977389 is an apocalyptic number.

It is an amenable number.

223977389 is a deficient number, since it is larger than the sum of its proper divisors (1).

223977389 is an equidigital number, since it uses as much as digits as its factorization.

223977389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1143072, while the sum is 50.

The square root of 223977389 is about 14965.8741475398. The cubic root of 223977389 is about 607.2973590705.

The spelling of 223977389 in words is "two hundred twenty-three million, nine hundred seventy-seven thousand, three hundred eighty-nine".