49439880 has 192 divisors, whose sum is σ = 191842560. Its totient is φ = 10796544.

The previous prime is 49439879. The next prime is 49439917. The reversal of 49439880 is 8893494.

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 a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 57534 + ... + 58386.

It is an arithmetic number, because the mean of its divisors is an integer number (999180).

Almost surely, 2^49439880 is an apocalyptic number.

49439880 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 49439880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95921280).

49439880 is an abundant number, since it is smaller than the sum of its proper divisors (142402680).

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

49439880 is a wasteful number, since it uses less digits than its factorization.

49439880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 900 (or 893 counting only the distinct ones).

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

The square root of 49439880 is about 7031.3497992917. The cubic root of 49439880 is about 367.0223142493.

The spelling of 49439880 in words is "forty-nine million, four hundred thirty-nine thousand, eight hundred eighty".