49161239 has 2 divisors, whose sum is σ = 49161240. Its totient is φ = 49161238.

The previous prime is 49161191. The next prime is 49161247. The reversal of 49161239 is 93216194.

49161239 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 49161239 - 2¹⁶ = 49095703 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 49161199 and 49161208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49161269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24580619 + 24580620.

It is an arithmetic number, because the mean of its divisors is an integer number (24580620).

Almost surely, 2^49161239 is an apocalyptic number.

49161239 is a deficient number, since it is larger than the sum of its proper divisors (1).

49161239 is an equidigital number, since it uses as much as digits as its factorization.

49161239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 35.

The square root of 49161239 is about 7011.5076124896. The cubic root of 49161239 is about 366.3315076004.

The spelling of 49161239 in words is "forty-nine million, one hundred sixty-one thousand, two hundred thirty-nine".