49279986 has 72 divisors (see below), whose sum is σ = 126444240. Its totient is φ = 13826736.

The previous prime is 49279949. The next prime is 49280003. The reversal of 49279986 is 68997294.

49279986 is a `hidden beast` number, since 492 + 79 + 9 + 86 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 51565 + ... + 52511.

It is an arithmetic number, because the mean of its divisors is an integer number (1756170).

Almost surely, 2^49279986 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49279986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63222120).

49279986 is an abundant number, since it is smaller than the sum of its proper divisors (77164254).

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

49279986 is a wasteful number, since it uses less digits than its factorization.

49279986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1028 (or 1018 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 54.

The square root of 49279986 is about 7019.9705127586. The cubic root of 49279986 is about 366.6262234548.

The spelling of 49279986 in words is "forty-nine million, two hundred seventy-nine thousand, nine hundred eighty-six".