49659778 has 16 divisors (see below), whose sum is σ = 85268160. Its totient is φ = 21248496.

The previous prime is 49659773. The next prime is 49659793. The reversal of 49659778 is 87795694.

It is not an unprimeable number, because it can be changed into a prime (49659773) 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, 7425 + ... + 12427.

It is an arithmetic number, because the mean of its divisors is an integer number (5329260).

Almost surely, 2^49659778 is an apocalyptic number.

49659778 is a deficient number, since it is larger than the sum of its proper divisors (35608382).

49659778 is a wasteful number, since it uses less digits than its factorization.

49659778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5721.

The product of its digits is 3810240, while the sum is 55.

The square root of 49659778 is about 7046.9694195448. The cubic root of 49659778 is about 367.5656550445.

The spelling of 49659778 in words is "forty-nine million, six hundred fifty-nine thousand, seven hundred seventy-eight".