226399 has 4 divisors (see below), whose sum is σ = 231264. Its totient is φ = 221536.

The previous prime is 226397. The next prime is 226409. The reversal of 226399 is 993622.

226399 = T₃₈₇ + T₃₈₈ + T₃₈₉.

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 226399 - 2¹ = 226397 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 226399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (226397) 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, 2362 + ... + 2455.

It is an arithmetic number, because the mean of its divisors is an integer number (57816).

2²²⁶³⁹⁹ is an apocalyptic number.

226399 is the 389-th centered triangular number.

226399 is a deficient number, since it is larger than the sum of its proper divisors (4865).

226399 is an equidigital number, since it uses as much as digits as its factorization.

226399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4864.

The product of its digits is 5832, while the sum is 31.

The square root of 226399 is about 475.8140393053. The cubic root of 226399 is about 60.9478188530.

It can be divided in two parts, 226 and 399, that added together give a 4-th power (625 = 5⁴).

The spelling of 226399 in words is "two hundred twenty-six thousand, three hundred ninety-nine".