49878906 has 64 divisors (see below), whose sum is σ = 125660160. Its totient is φ = 12821760.

The previous prime is 49878863. The next prime is 49878911. The reversal of 49878906 is 60987894.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48930 + ... + 49938.

It is an arithmetic number, because the mean of its divisors is an integer number (1963440).

Almost surely, 2^49878906 is an apocalyptic number.

It is a pronic number, being equal to 7062×7063.

It is a practical number, because each smaller number is the sum of distinct divisors of 49878906, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62830080).

49878906 is an abundant number, since it is smaller than the sum of its proper divisors (75781254).

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

49878906 is a wasteful number, since it uses less digits than its factorization.

49878906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1139.

The product of its (nonzero) digits is 870912, while the sum is 51.

The square root of 49878906 is about 7062.4999823009. The cubic root of 49878906 is about 368.1055000370.

The spelling of 49878906 in words is "forty-nine million, eight hundred seventy-eight thousand, nine hundred six".