223397819 has 2 divisors, whose sum is σ = 223397820. Its totient is φ = 223397818.

The previous prime is 223397767. The next prime is 223397849. The reversal of 223397819 is 918793322.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223397819 is a prime.

It is a super-4 number, since 4×223397819⁴ (a number of 34 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 223397819.

It is not a weakly prime, because it can be changed into another prime (223397849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111698909 + 111698910.

It is an arithmetic number, because the mean of its divisors is an integer number (111698910).

Almost surely, 2^223397819 is an apocalyptic number.

223397819 is a deficient number, since it is larger than the sum of its proper divisors (1).

223397819 is an equidigital number, since it uses as much as digits as its factorization.

223397819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 44.

The square root of 223397819 is about 14946.4985531729. The cubic root of 223397819 is about 606.7730868670.

The spelling of 223397819 in words is "two hundred twenty-three million, three hundred ninety-seven thousand, eight hundred nineteen".