49989666 has 32 divisors (see below), whose sum is σ = 101477376. Its totient is φ = 16416000.

The previous prime is 49989659. The next prime is 49989671. The reversal of 49989666 is 66698994.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207306 + ... + 207546.

It is an arithmetic number, because the mean of its divisors is an integer number (3171168).

Almost surely, 2^49989666 is an apocalyptic number.

49989666 is an abundant number, since it is smaller than the sum of its proper divisors (51487710).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

49989666 is a wasteful number, since it uses less digits than its factorization.

49989666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618.

The product of its digits is 5038848, while the sum is 57.

The square root of 49989666 is about 7070.3370499574. The cubic root of 49989666 is about 368.3777675943.

The spelling of 49989666 in words is "forty-nine million, nine hundred eighty-nine thousand, six hundred sixty-six".