223994139 has 4 divisors (see below), whose sum is σ = 298658856. Its totient is φ = 149329424.

The previous prime is 223994131. The next prime is 223994143. The reversal of 223994139 is 931499322.

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 223994139 - 2³ = 223994131 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 223994139.

It is not an unprimeable number, because it can be changed into a prime (223994131) 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, 37332354 + ... + 37332359.

It is an arithmetic number, because the mean of its divisors is an integer number (74664714).

Almost surely, 2^223994139 is an apocalyptic number.

223994139 is a deficient number, since it is larger than the sum of its proper divisors (74664717).

223994139 is an equidigital number, since it uses as much as digits as its factorization.

223994139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74664716.

The product of its digits is 104976, while the sum is 42.

The square root of 223994139 is about 14966.4337435476. The cubic root of 223994139 is about 607.3124974694.

The spelling of 223994139 in words is "two hundred twenty-three million, nine hundred ninety-four thousand, one hundred thirty-nine".