49989983 has 2 divisors, whose sum is σ = 49989984. Its totient is φ = 49989982.

The previous prime is 49989967. The next prime is 49989991. The reversal of 49989983 is 38998994.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 49989983 - 2⁴ = 49989967 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49989283) 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, 24994991 + 24994992.

It is an arithmetic number, because the mean of its divisors is an integer number (24994992).

Almost surely, 2^49989983 is an apocalyptic number.

49989983 is a deficient number, since it is larger than the sum of its proper divisors (1).

49989983 is an equidigital number, since it uses as much as digits as its factorization.

49989983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5038848, while the sum is 59.

The square root of 49989983 is about 7070.3594675236. The cubic root of 49989983 is about 368.3785462586.

The spelling of 49989983 in words is "forty-nine million, nine hundred eighty-nine thousand, nine hundred eighty-three".