49669440 has 112 divisors (see below), whose sum is σ = 162885120. Its totient is φ = 12810240.

The previous prime is 49669379. The next prime is 49669453. The reversal of 49669440 is 4496694.

49669440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 49669392 and 49669401.

It is a congruent number.

It is an unprimeable number.

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, 28926 + ... + 30594.

Almost surely, 2^49669440 is an apocalyptic number.

49669440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49669440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81442560).

49669440 is an abundant number, since it is smaller than the sum of its proper divisors (113215680).

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

49669440 is a wasteful number, since it uses less digits than its factorization.

49669440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1720 (or 1710 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 42.

The square root of 49669440 is about 7047.6549291236. The cubic root of 49669440 is about 367.5894918342.

The spelling of 49669440 in words is "forty-nine million, six hundred sixty-nine thousand, four hundred forty".