49999878 has 12 divisors (see below), whose sum is σ = 108333108. Its totient is φ = 16666620.

The previous prime is 49999877. The next prime is 49999883. The reversal of 49999878 is 87899994.

49999878 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49999877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1388868 + ... + 1388903.

It is an arithmetic number, because the mean of its divisors is an integer number (9027759).

Almost surely, 2^49999878 is an apocalyptic number.

49999878 is an abundant number, since it is smaller than the sum of its proper divisors (58333230).

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

49999878 is a wasteful number, since it uses less digits than its factorization.

49999878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2777779 (or 2777776 counting only the distinct ones).

The product of its digits is 11757312, while the sum is 63.

The square root of 49999878 is about 7071.0591851575. The cubic root of 49999878 is about 368.4028502292.

The spelling of 49999878 in words is "forty-nine million, nine hundred ninety-nine thousand, eight hundred seventy-eight".