226987897 has 4 divisors (see below), whose sum is σ = 236856960. Its totient is φ = 217118836.

The previous prime is 226987883. The next prime is 226987939. The reversal of 226987897 is 798789622.

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: 798789622 = 2 ⋅399394811.

It is a cyclic number.

It is not a de Polignac number, because 226987897 - 2¹¹ = 226985849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (226987807) 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, 4934497 + ... + 4934542.

It is an arithmetic number, because the mean of its divisors is an integer number (59214240).

Almost surely, 2^226987897 is an apocalyptic number.

It is an amenable number.

226987897 is a deficient number, since it is larger than the sum of its proper divisors (9869063).

226987897 is an equidigital number, since it uses as much as digits as its factorization.

226987897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9869062.

The product of its digits is 6096384, while the sum is 58.

The square root of 226987897 is about 15066.1175158035. The cubic root of 226987897 is about 610.0061783841.

The spelling of 226987897 in words is "two hundred twenty-six million, nine hundred eighty-seven thousand, eight hundred ninety-seven".