49689164 has 48 divisors (see below), whose sum is σ = 106122240. Its totient is φ = 19872000.

The previous prime is 49689149. The next prime is 49689169. The reversal of 49689164 is 46198694.

It is a happy number.

49689164 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (49689169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65789 + ... + 66539.

It is an arithmetic number, because the mean of its divisors is an integer number (2210880).

Almost surely, 2^49689164 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49689164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53061120).

49689164 is an abundant number, since it is smaller than the sum of its proper divisors (56433076).

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

49689164 is a wasteful number, since it uses less digits than its factorization.

49689164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 918 (or 916 counting only the distinct ones).

The product of its digits is 373248, while the sum is 47.

The square root of 49689164 is about 7049.0541209442. The cubic root of 49689164 is about 367.6381426453.

The spelling of 49689164 in words is "forty-nine million, six hundred eighty-nine thousand, one hundred sixty-four".