49919166 has 80 divisors (see below), whose sum is σ = 123623280. Its totient is φ = 14929920.

The previous prime is 49919153. The next prime is 49919171. The reversal of 49919166 is 66191994.

It is a congruent number.

It is an unprimeable number.

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 in 39 ways as a sum of consecutive naturals, for example, 194110 + ... + 194366.

It is an arithmetic number, because the mean of its divisors is an integer number (1545291).

Almost surely, 2^49919166 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49919166, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61811640).

49919166 is an abundant number, since it is smaller than the sum of its proper divisors (73704114).

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

49919166 is a wasteful number, since it uses less digits than its factorization.

49919166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391 (or 382 counting only the distinct ones).

The product of its digits is 104976, while the sum is 45.

The square root of 49919166 is about 7065.3496728754. The cubic root of 49919166 is about 368.2045127799.

The spelling of 49919166 in words is "forty-nine million, nine hundred nineteen thousand, one hundred sixty-six".