223838391 has 8 divisors (see below), whose sum is σ = 341087104. Its totient is φ = 127907640.

The previous prime is 223838387. The next prime is 223838399. The reversal of 223838391 is 193838322.

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

It is not a de Polignac number, because 223838391 - 2² = 223838387 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 (223838399) 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, 5329465 + ... + 5329506.

It is an arithmetic number, because the mean of its divisors is an integer number (42635888).

Almost surely, 2^223838391 is an apocalyptic number.

223838391 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

223838391 is a deficient number, since it is larger than the sum of its proper divisors (117248713).

223838391 is a wasteful number, since it uses less digits than its factorization.

223838391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10658981.

The product of its digits is 62208, while the sum is 39.

The square root of 223838391 is about 14961.2295951904. The cubic root of 223838391 is about 607.1717056334.

The spelling of 223838391 in words is "two hundred twenty-three million, eight hundred thirty-eight thousand, three hundred ninety-one".