49439808 has 252 divisors, whose sum is σ = 170303952. Its totient is φ = 14100480.

The previous prime is 49439801. The next prime is 49439813. The reversal of 49439808 is 80893494.

It is a happy number.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (49439801) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2908216 + ... + 2908232.

Almost surely, 2^49439808 is an apocalyptic number.

49439808 is a gapful number since it is divisible by the number (48) 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 49439808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85151976).

49439808 is an abundant number, since it is smaller than the sum of its proper divisors (120864144).

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

49439808 is a wasteful number, since it uses less digits than its factorization.

49439808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72 (or 33 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 49439808 is about 7031.3446793625. The cubic root of 49439808 is about 367.0221360826.

The spelling of 49439808 in words is "forty-nine million, four hundred thirty-nine thousand, eight hundred eight".