49943890 has 16 divisors (see below), whose sum is σ = 90016920. Its totient is φ = 19951360.

The previous prime is 49943867. The next prime is 49943903. The reversal of 49943890 is 9834994.

49943890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 25411681 + 24532209 = 5041^2 + 4953^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 49943890.

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, 5976 + ... + 11644.

Almost surely, 2^49943890 is an apocalyptic number.

49943890 is a deficient number, since it is larger than the sum of its proper divisors (40073030).

49943890 is a wasteful number, since it uses less digits than its factorization.

49943890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6557.

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 49943890 is about 7067.0991219877. The cubic root of 49943890 is about 368.2652909445.

The spelling of 49943890 in words is "forty-nine million, nine hundred forty-three thousand, eight hundred ninety".