49289904 has 80 divisors (see below), whose sum is σ = 143562240. Its totient is φ = 16188480.

The previous prime is 49289899. The next prime is 49289923. The reversal of 49289904 is 40998294.

It is a self number, because there is not a number n which added to its sum of digits gives 49289904.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29869 + ... + 31475.

It is an arithmetic number, because the mean of its divisors is an integer number (1794528).

Almost surely, 2^49289904 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 49289904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71781120).

49289904 is an abundant number, since it is smaller than the sum of its proper divisors (94272336).

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

49289904 is a wasteful number, since it uses less digits than its factorization.

49289904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1695 (or 1683 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 49289904 is about 7020.6768904430. The cubic root of 49289904 is about 366.6508173131.

The spelling of 49289904 in words is "forty-nine million, two hundred eighty-nine thousand, nine hundred four".