223439997 has 32 divisors (see below), whose sum is σ = 338950656. Its totient is φ = 129729600.

The previous prime is 223439989. The next prime is 223440001. The reversal of 223439997 is 799934322.

It is not a de Polignac number, because 223439997 - 2³ = 223439989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223439947) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 73722 + ... + 76692.

It is an arithmetic number, because the mean of its divisors is an integer number (10592208).

Almost surely, 2^223439997 is an apocalyptic number.

It is an amenable number.

223439997 is a deficient number, since it is larger than the sum of its proper divisors (115510659).

223439997 is a wasteful number, since it uses less digits than its factorization.

223439997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3081.

The product of its digits is 734832, while the sum is 48.

The square root of 223439997 is about 14947.9094524954. The cubic root of 223439997 is about 606.8112711622.

The spelling of 223439997 in words is "two hundred twenty-three million, four hundred thirty-nine thousand, nine hundred ninety-seven".