49779886 has 16 divisors (see below), whose sum is σ = 84646800. Its totient is φ = 21765888.

The previous prime is 49779883. The next prime is 49779901. The reversal of 49779886 is 68897794.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 49779886.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49779883) 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, 49891 + ... + 50878.

It is an arithmetic number, because the mean of its divisors is an integer number (5290425).

Almost surely, 2^49779886 is an apocalyptic number.

49779886 is a deficient number, since it is larger than the sum of its proper divisors (34866914).

49779886 is a wasteful number, since it uses less digits than its factorization.

49779886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100803.

The product of its digits is 6096384, while the sum is 58.

The square root of 49779886 is about 7055.4862341301. The cubic root of 49779886 is about 367.8617500143.

The spelling of 49779886 in words is "forty-nine million, seven hundred seventy-nine thousand, eight hundred eighty-six".