49040891 has 2 divisors, whose sum is σ = 49040892. Its totient is φ = 49040890.

The previous prime is 49040863. The next prime is 49040897. The reversal of 49040891 is 19804094.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 49040891 - 2²² = 44846587 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (49040897) 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, 24520445 + 24520446.

It is an arithmetic number, because the mean of its divisors is an integer number (24520446).

Almost surely, 2^49040891 is an apocalyptic number.

49040891 is a deficient number, since it is larger than the sum of its proper divisors (1).

49040891 is an equidigital number, since it uses as much as digits as its factorization.

49040891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 49040891 is about 7002.9201766120. The cubic root of 49040891 is about 366.0323336321.

The spelling of 49040891 in words is "forty-nine million, forty thousand, eight hundred ninety-one".