223991139 has 8 divisors (see below), whose sum is σ = 301734160. Its totient is φ = 147787776.

The previous prime is 223991137. The next prime is 223991147. The reversal of 223991139 is 931199322.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 223991139 - 2¹ = 223991137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 223991097 and 223991106.

It is not an unprimeable number, because it can be changed into a prime (223991137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 384574 + ... + 385155.

It is an arithmetic number, because the mean of its divisors is an integer number (37716770).

Almost surely, 2^223991139 is an apocalyptic number.

223991139 is a deficient number, since it is larger than the sum of its proper divisors (77743021).

223991139 is an equidigital number, since it uses as much as digits as its factorization.

223991139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769829.

The product of its digits is 26244, while the sum is 39.

The square root of 223991139 is about 14966.3335189351. Note that the first 3 decimals coincide. The cubic root of 223991139 is about 607.3097861699.

The spelling of 223991139 in words is "two hundred twenty-three million, nine hundred ninety-one thousand, one hundred thirty-nine".