224689399 has 4 divisors (see below), whose sum is σ = 245115720. Its totient is φ = 204263080.

The previous prime is 224689393. The next prime is 224689403. The reversal of 224689399 is 993986422.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 224689399 - 2⁹ = 224688887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224689393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10213144 + ... + 10213165.

It is an arithmetic number, because the mean of its divisors is an integer number (61278930).

Almost surely, 2^224689399 is an apocalyptic number.

224689399 is a deficient number, since it is larger than the sum of its proper divisors (20426321).

224689399 is a wasteful number, since it uses less digits than its factorization.

224689399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20426320.

The product of its digits is 1679616, while the sum is 52.

The square root of 224689399 is about 14989.6430577916. The cubic root of 224689399 is about 607.9401983758.

The spelling of 224689399 in words is "two hundred twenty-four million, six hundred eighty-nine thousand, three hundred ninety-nine".