49249613209 has 2 divisors, whose sum is σ = 49249613210. Its totient is φ = 49249613208.

The previous prime is 49249613201. The next prime is 49249613267. The reversal of 49249613209 is 90231694294.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48255787584 + 993825625 = 219672^2 + 31525^2 .

It is a cyclic number.

It is not a de Polignac number, because 49249613209 - 2³ = 49249613201 is a prime.

It is a super-2 number, since 2×49249613209² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (49249613201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24624806604 + 24624806605.

It is an arithmetic number, because the mean of its divisors is an integer number (24624806605).

Almost surely, 2^49249613209 is an apocalyptic number.

It is an amenable number.

49249613209 is a deficient number, since it is larger than the sum of its proper divisors (1).

49249613209 is an equidigital number, since it uses as much as digits as its factorization.

49249613209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 839808, while the sum is 49.

The spelling of 49249613209 in words is "forty-nine billion, two hundred forty-nine million, six hundred thirteen thousand, two hundred nine".