49949890 has 32 divisors (see below), whose sum is σ = 95301360. Its totient is φ = 18816000.

The previous prime is 49949881. The next prime is 49949909. The reversal of 49949890 is 9894994.

49949890 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 8 ways, for example, as 1466521 + 48483369 = 1211^2 + 6963^2 .

It is a super-2 number, since 2×49949890² = 4989983022024200, which contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 9790 + ... + 13990.

Almost surely, 2^49949890 is an apocalyptic number.

49949890 is a deficient number, since it is larger than the sum of its proper divisors (45351470).

49949890 is a wasteful number, since it uses less digits than its factorization.

49949890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4278.

The product of its (nonzero) digits is 839808, while the sum is 52.

The square root of 49949890 is about 7067.5236115630. The cubic root of 49949890 is about 368.2800375149.

It can be divided in two parts, 4994 and 9890, that added together give a square (14884 = 122²).

The spelling of 49949890 in words is "forty-nine million, nine hundred forty-nine thousand, eight hundred ninety".