226405919 has 8 divisors (see below), whose sum is σ = 238592640. Its totient is φ = 214246296.

The previous prime is 226405903. The next prime is 226405939. The reversal of 226405919 is 919504622.

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

It is a cyclic number.

It is not a de Polignac number, because 226405919 - 2⁴ = 226405903 is a prime.

It is a super-2 number, since 2×226405919² = 102519280316469122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (226405939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11702 + ... + 24284.

It is an arithmetic number, because the mean of its divisors is an integer number (29824080).

Almost surely, 2^226405919 is an apocalyptic number.

226405919 is a deficient number, since it is larger than the sum of its proper divisors (12186721).

226405919 is a wasteful number, since it uses less digits than its factorization.

226405919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13549.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 226405919 is about 15046.7909867852. The cubic root of 226405919 is about 609.4843972396.

The spelling of 226405919 in words is "two hundred twenty-six million, four hundred five thousand, nine hundred nineteen".