209490049962 has 24 divisors (see below), whose sum is σ = 453910165956. Its totient is φ = 69827700096.

The previous prime is 209490049949. The next prime is 209490049969. The reversal of 209490049962 is 269940094902.

209490049962 is a `hidden beast` number, since 2 + 0 + 9 + 4 + 90 + 0 + 499 + 62 = 666.

209490049962 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 181800757161 + 27689292801 = 426381^2 + 166401^2 .

It is a junction number, because it is equal to n+sod(n) for n = 209490049899 and 209490049908.

It is not an unprimeable number, because it can be changed into a prime (209490049969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 416658 + ... + 769794.

Almost surely, 2^209490049962 is an apocalyptic number.

209490049962 is an abundant number, since it is smaller than the sum of its proper divisors (244420115994).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

209490049962 is a wasteful number, since it uses less digits than its factorization.

209490049962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386102 (or 386099 counting only the distinct ones).

The product of its (nonzero) digits is 2519424, while the sum is 54.

The spelling of 209490049962 in words is "two hundred nine billion, four hundred ninety million, forty-nine thousand, nine hundred sixty-two".