2209740447 has 4 divisors (see below), whose sum is σ = 2946320600. Its totient is φ = 1473160296.

The previous prime is 2209740439. The next prime is 2209740503. The reversal of 2209740447 is 7440479022.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2209740447 - 2³ = 2209740439 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 (2209740947) 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, 368290072 + ... + 368290077.

It is an arithmetic number, because the mean of its divisors is an integer number (736580150).

Almost surely, 2^2209740447 is an apocalyptic number.

2209740447 is a deficient number, since it is larger than the sum of its proper divisors (736580153).

2209740447 is an equidigital number, since it uses as much as digits as its factorization.

2209740447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736580152.

The product of its (nonzero) digits is 112896, while the sum is 39.

The square root of 2209740447 is about 47007.8764357634. The cubic root of 2209740447 is about 1302.5080667982.

The spelling of 2209740447 in words is "two billion, two hundred nine million, seven hundred forty thousand, four hundred forty-seven".