49109440 has 84 divisors (see below), whose sum is σ = 121167144. Its totient is φ = 18955776.

The previous prime is 49109381. The next prime is 49109449. The reversal of 49109440 is 4490194.

49109440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×49109440² = 4823474194227200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49109449) 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 11 ways as a sum of consecutive naturals, for example, 591639 + ... + 591721.

It is an arithmetic number, because the mean of its divisors is an integer number (1442466).

Almost surely, 2^49109440 is an apocalyptic number.

49109440 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 49109440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60583572).

49109440 is an abundant number, since it is smaller than the sum of its proper divisors (72057704).

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

49109440 is an equidigital number, since it uses as much as digits as its factorization.

49109440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186 (or 133 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 49109440 is about 7007.8127828874. The cubic root of 49109440 is about 366.2028000072.

The spelling of 49109440 in words is "forty-nine million, one hundred nine thousand, four hundred forty".