49999904 has 48 divisors (see below), whose sum is σ = 101787840. Its totient is φ = 24165120.

The previous prime is 49999903. The next prime is 49999921. The reversal of 49999904 is 40999994.

It is not an unprimeable number, because it can be changed into a prime (49999903) 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, 133862 + ... + 134234.

It is an arithmetic number, because the mean of its divisors is an integer number (2120580).

Almost surely, 2^49999904 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 49999904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50893920).

49999904 is an abundant number, since it is smaller than the sum of its proper divisors (51787936).

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

49999904 is a wasteful number, since it uses less digits than its factorization.

49999904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513 (or 505 counting only the distinct ones).

The product of its (nonzero) digits is 944784, while the sum is 53.

The square root of 49999904 is about 7071.0610236371. The cubic root of 49999904 is about 368.4029140859.

It can be divided in two parts, 4999990 and 4, that added together give a palindrome (4999994).

The spelling of 49999904 in words is "forty-nine million, nine hundred ninety-nine thousand, nine hundred four".