49899920 has 40 divisors (see below), whose sum is σ = 132592704. Its totient is φ = 17108352.

The previous prime is 49899907. The next prime is 49899931. The reversal of 49899920 is 2999894.

49899920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43994 + ... + 45113.

Almost surely, 2^49899920 is an apocalyptic number.

49899920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

49899920 is an abundant number, since it is smaller than the sum of its proper divisors (82692784).

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

49899920 is a wasteful number, since it uses less digits than its factorization.

49899920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89127 (or 89121 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 50.

The square root of 49899920 is about 7063.9875424579. The cubic root of 49899920 is about 368.1571871030.

The spelling of 49899920 in words is "forty-nine million, eight hundred ninety-nine thousand, nine hundred twenty".