49989671 has 2 divisors, whose sum is σ = 49989672. Its totient is φ = 49989670.

The previous prime is 49989659. The next prime is 49989691. The reversal of 49989671 is 17698994.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49989671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49989631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24994835 + 24994836.

It is an arithmetic number, because the mean of its divisors is an integer number (24994836).

Almost surely, 2^49989671 is an apocalyptic number.

49989671 is a deficient number, since it is larger than the sum of its proper divisors (1).

49989671 is an equidigital number, since it uses as much as digits as its factorization.

49989671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 979776, while the sum is 53.

The square root of 49989671 is about 7070.3374035473. The cubic root of 49989671 is about 368.3777798761.

The spelling of 49989671 in words is "forty-nine million, nine hundred eighty-nine thousand, six hundred seventy-one".