947226209 has 8 divisors (see below), whose sum is σ = 997782240. Its totient is φ = 896740416.

The previous prime is 947226193. The next prime is 947226223. The reversal of 947226209 is 902622749.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 947226209 - 2⁴ = 947226193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (947226289) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11369 + ... + 44985.

It is an arithmetic number, because the mean of its divisors is an integer number (124722780).

Almost surely, 2^947226209 is an apocalyptic number.

It is an amenable number.

947226209 is a deficient number, since it is larger than the sum of its proper divisors (50556031).

947226209 is a wasteful number, since it uses less digits than its factorization.

947226209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35119.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 947226209 is about 30777.0402898004. The cubic root of 947226209 is about 982.0898789207.

The spelling of 947226209 in words is "nine hundred forty-seven million, two hundred twenty-six thousand, two hundred nine".