223419997 has 2 divisors, whose sum is σ = 223419998. Its totient is φ = 223419996.

The previous prime is 223419991. The next prime is 223420013. The reversal of 223419997 is 799914322.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 223024356 + 395641 = 14934^2 + 629^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223419997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223419991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111709998 + 111709999.

It is an arithmetic number, because the mean of its divisors is an integer number (111709999).

Almost surely, 2^223419997 is an apocalyptic number.

It is an amenable number.

223419997 is a deficient number, since it is larger than the sum of its proper divisors (1).

223419997 is an equidigital number, since it uses as much as digits as its factorization.

223419997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 244944, while the sum is 46.

The square root of 223419997 is about 14947.2404476545. The cubic root of 223419997 is about 606.7931654996.

The spelling of 223419997 in words is "two hundred twenty-three million, four hundred nineteen thousand, nine hundred ninety-seven".