226208397 has 4 divisors (see below), whose sum is σ = 301611200. Its totient is φ = 150805596.

The previous prime is 226208393. The next prime is 226208407. The reversal of 226208397 is 793802622.

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.

It is not a de Polignac number, because 226208397 - 2² = 226208393 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 (226208393) 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, 37701397 + ... + 37701402.

It is an arithmetic number, because the mean of its divisors is an integer number (75402800).

Almost surely, 2^226208397 is an apocalyptic number.

It is an amenable number.

226208397 is a deficient number, since it is larger than the sum of its proper divisors (75402803).

226208397 is an equidigital number, since it uses as much as digits as its factorization.

226208397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75402802.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 226208397 is about 15040.2259623983. The cubic root of 226208397 is about 609.3071026941.

The spelling of 226208397 in words is "two hundred twenty-six million, two hundred eight thousand, three hundred ninety-seven".