227405389 has 4 divisors (see below), whose sum is σ = 229141440. Its totient is φ = 225669340.

The previous prime is 227405333. The next prime is 227405417. The reversal of 227405389 is 983504722.

227405389 = 1252² + 1253² + ... + 1382².

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 983504722 = 2 ⋅491752361.

It is a cyclic number.

It is not a de Polignac number, because 227405389 - 2¹⁷ = 227274317 is a prime.

It is a Smith number, since the sum of its digits (40) 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 congruent number.

It is not an unprimeable number, because it can be changed into a prime (227405329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 867829 + ... + 868090.

It is an arithmetic number, because the mean of its divisors is an integer number (57285360).

Almost surely, 2^227405389 is an apocalyptic number.

It is an amenable number.

227405389 is a deficient number, since it is larger than the sum of its proper divisors (1736051).

227405389 is a wasteful number, since it uses less digits than its factorization.

227405389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1736050.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 227405389 is about 15079.9664787426. The cubic root of 227405389 is about 610.3799379910.

The spelling of 227405389 in words is "two hundred twenty-seven million, four hundred five thousand, three hundred eighty-nine".