49000891 has 2 divisors, whose sum is σ = 49000892. Its totient is φ = 49000890.

The previous prime is 49000877. The next prime is 49000933. The reversal of 49000891 is 19800094.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49000891 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (49000291) 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, 24500445 + 24500446.

It is an arithmetic number, because the mean of its divisors is an integer number (24500446).

Almost surely, 2^49000891 is an apocalyptic number.

49000891 is a deficient number, since it is larger than the sum of its proper divisors (1).

49000891 is an equidigital number, since it uses as much as digits as its factorization.

49000891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 49000891 is about 7000.0636425678. The cubic root of 49000891 is about 365.9327889762.

The spelling of 49000891 in words is "forty-nine million, eight hundred ninety-one", and thus it is an aban number.