49019904 has 132 divisors (see below), whose sum is σ = 147531384. Its totient is φ = 16257024.

The previous prime is 49019903. The next prime is 49019909. The reversal of 49019904 is 40991094.

49019904 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49019903) 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 11 ways as a sum of consecutive naturals, for example, 248734 + ... + 248930.

It is an arithmetic number, because the mean of its divisors is an integer number (1117662).

Almost surely, 2^49019904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49019904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73765692).

49019904 is an abundant number, since it is smaller than the sum of its proper divisors (98511480).

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

49019904 is an equidigital number, since it uses as much as digits as its factorization.

49019904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232 (or 202 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 49019904 is about 7001.4215699385. The cubic root of 49019904 is about 365.9801117922.

The spelling of 49019904 in words is "forty-nine million, nineteen thousand, nine hundred four".