226209739 has 4 divisors (see below), whose sum is σ = 258525424. Its totient is φ = 193894056.

The previous prime is 226209727. The next prime is 226209779. The reversal of 226209739 is 937902622.

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 226209739 - 2⁵ = 226209707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (226209779) 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, 16157832 + ... + 16157845.

It is an arithmetic number, because the mean of its divisors is an integer number (64631356).

Almost surely, 2^226209739 is an apocalyptic number.

226209739 is a deficient number, since it is larger than the sum of its proper divisors (32315685).

226209739 is an equidigital number, since it uses as much as digits as its factorization.

226209739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32315684.

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 226209739 is about 15040.2705760236. The cubic root of 226209739 is about 609.3083076133.

The spelling of 226209739 in words is "two hundred twenty-six million, two hundred nine thousand, seven hundred thirty-nine".