49779678 has 16 divisors (see below), whose sum is σ = 107217936. Its totient is φ = 15316800.

The previous prime is 49779673. The next prime is 49779701. The reversal of 49779678 is 87697794.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49779671) 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, 319023 + ... + 319178.

It is an arithmetic number, because the mean of its divisors is an integer number (6701121).

Almost surely, 2^49779678 is an apocalyptic number.

49779678 is an abundant number, since it is smaller than the sum of its proper divisors (57438258).

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

49779678 is a wasteful number, since it uses less digits than its factorization.

49779678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638219.

The product of its digits is 5334336, while the sum is 57.

The square root of 49779678 is about 7055.4714938124. The cubic root of 49779678 is about 367.8612376565.

The spelling of 49779678 in words is "forty-nine million, seven hundred seventy-nine thousand, six hundred seventy-eight".