49809880 has 32 divisors (see below), whose sum is σ = 112559040. Its totient is φ = 19837440.

The previous prime is 49809869. The next prime is 49809883. The reversal of 49809880 is 8890894.

It is a super-2 number, since 2×49809880² = 4962048291228800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 49809880.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49809883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7057 + ... + 12223.

It is an arithmetic number, because the mean of its divisors is an integer number (3517470).

Almost surely, 2^49809880 is an apocalyptic number.

49809880 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

49809880 is an abundant number, since it is smaller than the sum of its proper divisors (62749160).

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

49809880 is a wasteful number, since it uses less digits than its factorization.

49809880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5419 (or 5415 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 46.

The square root of 49809880 is about 7057.6114939829. The cubic root of 49809880 is about 367.9356180691.

The spelling of 49809880 in words is "forty-nine million, eight hundred nine thousand, eight hundred eighty".