49391880 has 64 divisors (see below), whose sum is σ = 151804800. Its totient is φ = 12848640.

The previous prime is 49391869. The next prime is 49391891. The reversal of 49391880 is 8819394.

It is an interprime number because it is at equal distance from previous prime (49391869) and next prime (49391891).

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 15 ways as a sum of consecutive naturals, for example, 100 + ... + 9939.

It is an arithmetic number, because the mean of its divisors is an integer number (2371950).

Almost surely, 2^49391880 is an apocalyptic number.

49391880 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 49391880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75902400).

49391880 is an abundant number, since it is smaller than the sum of its proper divisors (102412920).

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

49391880 is a wasteful number, since it uses less digits than its factorization.

49391880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10094 (or 10090 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 49391880 is about 7027.9356855338. The cubic root of 49391880 is about 366.9034980528.

The spelling of 49391880 in words is "forty-nine million, three hundred ninety-one thousand, eight hundred eighty".