41494912209 has 9 divisors (see below), whose sum is σ = 59937978139. Its totient is φ = 27662867400.

The previous prime is 41494912201. The next prime is 41494912211. The reversal of 41494912209 is 90221949414.

It is a happy number.

The square root of 41494912209 is 203703.

It is a perfect power (a square), and thus also a powerful number.

41494912209 is a `hidden beast` number, since 414 + 9 + 4 + 9 + 1 + 220 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 30381535809 + 11113376400 = 174303^2 + 105420^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 41494912209 - 2³ = 41494912201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (41494912201) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 577159 + ... + 645059.

Almost surely, 2^41494912209 is an apocalyptic number.

41494912209 is the 203703-rd square number.

41494912209 is the 101852-nd centered octagonal number.

It is an amenable number.

41494912209 is a deficient number, since it is larger than the sum of its proper divisors (18443065930).

41494912209 is an frugal number, since it uses more digits than its factorization.

41494912209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135808 (or 67904 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The spelling of 41494912209 in words is "forty-one billion, four hundred ninety-four million, nine hundred twelve thousand, two hundred nine".