49195891 has 2 divisors, whose sum is σ = 49195892. Its totient is φ = 49195890.

The previous prime is 49195849. The next prime is 49195897. The reversal of 49195891 is 19859194.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 49195891 - 2⁷ = 49195763 is a prime.

It is not a weakly prime, because it can be changed into another prime (49195897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24597945 + 24597946.

It is an arithmetic number, because the mean of its divisors is an integer number (24597946).

Almost surely, 2^49195891 is an apocalyptic number.

49195891 is a deficient number, since it is larger than the sum of its proper divisors (1).

49195891 is an equidigital number, since it uses as much as digits as its factorization.

49195891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116640, while the sum is 46.

The square root of 49195891 is about 7013.9782577365. The cubic root of 49195891 is about 366.4175587136.

It can be divided in two parts, 49195 and 891, that added together give a triangular number (50086 = T₃₁₆).

The spelling of 49195891 in words is "forty-nine million, one hundred ninety-five thousand, eight hundred ninety-one".