49439328 has 48 divisors (see below), whose sum is σ = 135426816. Its totient is φ = 15762560.

The previous prime is 49439321. The next prime is 49439329. The reversal of 49439328 is 82393494.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 49439328.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49439321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8988 + ... + 13403.

It is an arithmetic number, because the mean of its divisors is an integer number (2821392).

Almost surely, 2^49439328 is an apocalyptic number.

49439328 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

49439328 is an abundant number, since it is smaller than the sum of its proper divisors (85987488).

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

49439328 is a wasteful number, since it uses less digits than its factorization.

49439328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22427 (or 22419 counting only the distinct ones).

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

The square root of 49439328 is about 7031.3105464060. The cubic root of 49439328 is about 367.0209483003.

It can be divided in two parts, 4943932 and 8, that added together give a triangular number (4943940 = T₃₁₄₄).

The spelling of 49439328 in words is "forty-nine million, four hundred thirty-nine thousand, three hundred twenty-eight".