49118890 has 16 divisors (see below), whose sum is σ = 88502400. Its totient is φ = 19627920.

The previous prime is 49118879. The next prime is 49118921. The reversal of 49118890 is 9881194.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12235 + ... + 15745.

It is an arithmetic number, because the mean of its divisors is an integer number (5531400).

Almost surely, 2^49118890 is an apocalyptic number.

49118890 is a deficient number, since it is larger than the sum of its proper divisors (39383510).

49118890 is a wasteful number, since it uses less digits than its factorization.

49118890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4917.

The product of its (nonzero) digits is 20736, while the sum is 40.

The square root of 49118890 is about 7008.4869979190. The cubic root of 49118890 is about 366.2262876470.

Subtracting from 49118890 its reverse (9881194), we obtain a square (39237696 = 6264²).

The spelling of 49118890 in words is "forty-nine million, one hundred eighteen thousand, eight hundred ninety".